• Search Menu

Sign in through your institution

  • Browse content in Arts and Humanities
  • Browse content in Archaeology
  • Anglo-Saxon and Medieval Archaeology
  • Archaeological Methodology and Techniques
  • Archaeology by Region
  • Archaeology of Religion
  • Archaeology of Trade and Exchange
  • Biblical Archaeology
  • Contemporary and Public Archaeology
  • Environmental Archaeology
  • Historical Archaeology
  • History and Theory of Archaeology
  • Industrial Archaeology
  • Landscape Archaeology
  • Mortuary Archaeology
  • Prehistoric Archaeology
  • Underwater Archaeology
  • Zooarchaeology
  • Browse content in Architecture
  • Architectural Structure and Design
  • History of Architecture
  • Residential and Domestic Buildings
  • Theory of Architecture
  • Browse content in Art
  • Art Subjects and Themes
  • History of Art
  • Industrial and Commercial Art
  • Theory of Art
  • Biographical Studies
  • Byzantine Studies
  • Browse content in Classical Studies
  • Classical History
  • Classical Philosophy
  • Classical Mythology
  • Classical Numismatics
  • Classical Literature
  • Classical Reception
  • Classical Art and Architecture
  • Classical Oratory and Rhetoric
  • Greek and Roman Epigraphy
  • Greek and Roman Law
  • Greek and Roman Papyrology
  • Greek and Roman Archaeology
  • Late Antiquity
  • Religion in the Ancient World
  • Social History
  • Digital Humanities
  • Browse content in History
  • Colonialism and Imperialism
  • Diplomatic History
  • Environmental History
  • Genealogy, Heraldry, Names, and Honours
  • Genocide and Ethnic Cleansing
  • Historical Geography
  • History by Period
  • History of Emotions
  • History of Agriculture
  • History of Education
  • History of Gender and Sexuality
  • Industrial History
  • Intellectual History
  • International History
  • Labour History
  • Legal and Constitutional History
  • Local and Family History
  • Maritime History
  • Military History
  • National Liberation and Post-Colonialism
  • Oral History
  • Political History
  • Public History
  • Regional and National History
  • Revolutions and Rebellions
  • Slavery and Abolition of Slavery
  • Social and Cultural History
  • Theory, Methods, and Historiography
  • Urban History
  • World History
  • Browse content in Language Teaching and Learning
  • Language Learning (Specific Skills)
  • Language Teaching Theory and Methods
  • Browse content in Linguistics
  • Applied Linguistics
  • Cognitive Linguistics
  • Computational Linguistics
  • Forensic Linguistics
  • Grammar, Syntax and Morphology
  • Historical and Diachronic Linguistics
  • History of English
  • Language Acquisition
  • Language Evolution
  • Language Reference
  • Language Variation
  • Language Families
  • Lexicography
  • Linguistic Anthropology
  • Linguistic Theories
  • Linguistic Typology
  • Phonetics and Phonology
  • Psycholinguistics
  • Sociolinguistics
  • Translation and Interpretation
  • Writing Systems
  • Browse content in Literature
  • Bibliography
  • Children's Literature Studies
  • Literary Studies (Asian)
  • Literary Studies (European)
  • Literary Studies (Eco-criticism)
  • Literary Studies (Romanticism)
  • Literary Studies (American)
  • Literary Studies (Modernism)
  • Literary Studies - World
  • Literary Studies (1500 to 1800)
  • Literary Studies (19th Century)
  • Literary Studies (20th Century onwards)
  • Literary Studies (African American Literature)
  • Literary Studies (British and Irish)
  • Literary Studies (Early and Medieval)
  • Literary Studies (Fiction, Novelists, and Prose Writers)
  • Literary Studies (Gender Studies)
  • Literary Studies (Graphic Novels)
  • Literary Studies (History of the Book)
  • Literary Studies (Plays and Playwrights)
  • Literary Studies (Poetry and Poets)
  • Literary Studies (Postcolonial Literature)
  • Literary Studies (Queer Studies)
  • Literary Studies (Science Fiction)
  • Literary Studies (Travel Literature)
  • Literary Studies (War Literature)
  • Literary Studies (Women's Writing)
  • Literary Theory and Cultural Studies
  • Mythology and Folklore
  • Shakespeare Studies and Criticism
  • Browse content in Media Studies
  • Browse content in Music
  • Applied Music
  • Dance and Music
  • Ethics in Music
  • Ethnomusicology
  • Gender and Sexuality in Music
  • Medicine and Music
  • Music Cultures
  • Music and Religion
  • Music and Media
  • Music and Culture
  • Music Education and Pedagogy
  • Music Theory and Analysis
  • Musical Scores, Lyrics, and Libretti
  • Musical Structures, Styles, and Techniques
  • Musicology and Music History
  • Performance Practice and Studies
  • Race and Ethnicity in Music
  • Sound Studies
  • Browse content in Performing Arts
  • Browse content in Philosophy
  • Aesthetics and Philosophy of Art
  • Epistemology
  • Feminist Philosophy
  • History of Western Philosophy
  • Metaphysics
  • Moral Philosophy
  • Non-Western Philosophy
  • Philosophy of Science
  • Philosophy of Language
  • Philosophy of Mind
  • Philosophy of Perception
  • Philosophy of Action
  • Philosophy of Law
  • Philosophy of Religion
  • Philosophy of Mathematics and Logic
  • Practical Ethics
  • Social and Political Philosophy
  • Browse content in Religion
  • Biblical Studies
  • Christianity
  • East Asian Religions
  • History of Religion
  • Judaism and Jewish Studies
  • Qumran Studies
  • Religion and Education
  • Religion and Health
  • Religion and Politics
  • Religion and Science
  • Religion and Law
  • Religion and Art, Literature, and Music
  • Religious Studies
  • Browse content in Society and Culture
  • Cookery, Food, and Drink
  • Cultural Studies
  • Customs and Traditions
  • Ethical Issues and Debates
  • Hobbies, Games, Arts and Crafts
  • Natural world, Country Life, and Pets
  • Popular Beliefs and Controversial Knowledge
  • Sports and Outdoor Recreation
  • Technology and Society
  • Travel and Holiday
  • Visual Culture
  • Browse content in Law
  • Arbitration
  • Browse content in Company and Commercial Law
  • Commercial Law
  • Company Law
  • Browse content in Comparative Law
  • Systems of Law
  • Competition Law
  • Browse content in Constitutional and Administrative Law
  • Government Powers
  • Judicial Review
  • Local Government Law
  • Military and Defence Law
  • Parliamentary and Legislative Practice
  • Construction Law
  • Contract Law
  • Browse content in Criminal Law
  • Criminal Procedure
  • Criminal Evidence Law
  • Sentencing and Punishment
  • Employment and Labour Law
  • Environment and Energy Law
  • Browse content in Financial Law
  • Banking Law
  • Insolvency Law
  • History of Law
  • Human Rights and Immigration
  • Intellectual Property Law
  • Browse content in International Law
  • Private International Law and Conflict of Laws
  • Public International Law
  • IT and Communications Law
  • Jurisprudence and Philosophy of Law
  • Law and Politics
  • Law and Society
  • Browse content in Legal System and Practice
  • Courts and Procedure
  • Legal Skills and Practice
  • Legal System - Costs and Funding
  • Primary Sources of Law
  • Regulation of Legal Profession
  • Medical and Healthcare Law
  • Browse content in Policing
  • Criminal Investigation and Detection
  • Police and Security Services
  • Police Procedure and Law
  • Police Regional Planning
  • Browse content in Property Law
  • Personal Property Law
  • Restitution
  • Study and Revision
  • Terrorism and National Security Law
  • Browse content in Trusts Law
  • Wills and Probate or Succession
  • Browse content in Medicine and Health
  • Browse content in Allied Health Professions
  • Arts Therapies
  • Clinical Science
  • Dietetics and Nutrition
  • Occupational Therapy
  • Operating Department Practice
  • Physiotherapy
  • Radiography
  • Speech and Language Therapy
  • Browse content in Anaesthetics
  • General Anaesthesia
  • Browse content in Clinical Medicine
  • Acute Medicine
  • Cardiovascular Medicine
  • Clinical Genetics
  • Clinical Pharmacology and Therapeutics
  • Dermatology
  • Endocrinology and Diabetes
  • Gastroenterology
  • Genito-urinary Medicine
  • Geriatric Medicine
  • Infectious Diseases
  • Medical Toxicology
  • Medical Oncology
  • Pain Medicine
  • Palliative Medicine
  • Rehabilitation Medicine
  • Respiratory Medicine and Pulmonology
  • Rheumatology
  • Sleep Medicine
  • Sports and Exercise Medicine
  • Clinical Neuroscience
  • Community Medical Services
  • Critical Care
  • Emergency Medicine
  • Forensic Medicine
  • Haematology
  • History of Medicine
  • Browse content in Medical Dentistry
  • Oral and Maxillofacial Surgery
  • Paediatric Dentistry
  • Restorative Dentistry and Orthodontics
  • Surgical Dentistry
  • Browse content in Medical Skills
  • Clinical Skills
  • Communication Skills
  • Nursing Skills
  • Surgical Skills
  • Medical Ethics
  • Medical Statistics and Methodology
  • Browse content in Neurology
  • Clinical Neurophysiology
  • Neuropathology
  • Nursing Studies
  • Browse content in Obstetrics and Gynaecology
  • Gynaecology
  • Occupational Medicine
  • Ophthalmology
  • Otolaryngology (ENT)
  • Browse content in Paediatrics
  • Neonatology
  • Browse content in Pathology
  • Chemical Pathology
  • Clinical Cytogenetics and Molecular Genetics
  • Histopathology
  • Medical Microbiology and Virology
  • Patient Education and Information
  • Browse content in Pharmacology
  • Psychopharmacology
  • Browse content in Popular Health
  • Caring for Others
  • Complementary and Alternative Medicine
  • Self-help and Personal Development
  • Browse content in Preclinical Medicine
  • Cell Biology
  • Molecular Biology and Genetics
  • Reproduction, Growth and Development
  • Primary Care
  • Professional Development in Medicine
  • Browse content in Psychiatry
  • Addiction Medicine
  • Child and Adolescent Psychiatry
  • Forensic Psychiatry
  • Learning Disabilities
  • Old Age Psychiatry
  • Psychotherapy
  • Browse content in Public Health and Epidemiology
  • Epidemiology
  • Public Health
  • Browse content in Radiology
  • Clinical Radiology
  • Interventional Radiology
  • Nuclear Medicine
  • Radiation Oncology
  • Reproductive Medicine
  • Browse content in Surgery
  • Cardiothoracic Surgery
  • Gastro-intestinal and Colorectal Surgery
  • General Surgery
  • Neurosurgery
  • Paediatric Surgery
  • Peri-operative Care
  • Plastic and Reconstructive Surgery
  • Surgical Oncology
  • Transplant Surgery
  • Trauma and Orthopaedic Surgery
  • Vascular Surgery
  • Browse content in Science and Mathematics
  • Browse content in Biological Sciences
  • Aquatic Biology
  • Biochemistry
  • Bioinformatics and Computational Biology
  • Developmental Biology
  • Ecology and Conservation
  • Evolutionary Biology
  • Genetics and Genomics
  • Microbiology
  • Molecular and Cell Biology
  • Natural History
  • Plant Sciences and Forestry
  • Research Methods in Life Sciences
  • Structural Biology
  • Systems Biology
  • Zoology and Animal Sciences
  • Browse content in Chemistry
  • Analytical Chemistry
  • Computational Chemistry
  • Crystallography
  • Environmental Chemistry
  • Industrial Chemistry
  • Inorganic Chemistry
  • Materials Chemistry
  • Medicinal Chemistry
  • Mineralogy and Gems
  • Organic Chemistry
  • Physical Chemistry
  • Polymer Chemistry
  • Study and Communication Skills in Chemistry
  • Theoretical Chemistry
  • Browse content in Computer Science
  • Artificial Intelligence
  • Computer Architecture and Logic Design
  • Game Studies
  • Human-Computer Interaction
  • Mathematical Theory of Computation
  • Programming Languages
  • Software Engineering
  • Systems Analysis and Design
  • Virtual Reality
  • Browse content in Computing
  • Business Applications
  • Computer Security
  • Computer Games
  • Computer Networking and Communications
  • Digital Lifestyle
  • Graphical and Digital Media Applications
  • Operating Systems
  • Browse content in Earth Sciences and Geography
  • Atmospheric Sciences
  • Environmental Geography
  • Geology and the Lithosphere
  • Maps and Map-making
  • Meteorology and Climatology
  • Oceanography and Hydrology
  • Palaeontology
  • Physical Geography and Topography
  • Regional Geography
  • Soil Science
  • Urban Geography
  • Browse content in Engineering and Technology
  • Agriculture and Farming
  • Biological Engineering
  • Civil Engineering, Surveying, and Building
  • Electronics and Communications Engineering
  • Energy Technology
  • Engineering (General)
  • Environmental Science, Engineering, and Technology
  • History of Engineering and Technology
  • Mechanical Engineering and Materials
  • Technology of Industrial Chemistry
  • Transport Technology and Trades
  • Browse content in Environmental Science
  • Applied Ecology (Environmental Science)
  • Conservation of the Environment (Environmental Science)
  • Environmental Sustainability
  • Environmentalist Thought and Ideology (Environmental Science)
  • Management of Land and Natural Resources (Environmental Science)
  • Natural Disasters (Environmental Science)
  • Nuclear Issues (Environmental Science)
  • Pollution and Threats to the Environment (Environmental Science)
  • Social Impact of Environmental Issues (Environmental Science)
  • History of Science and Technology
  • Browse content in Materials Science
  • Ceramics and Glasses
  • Composite Materials
  • Metals, Alloying, and Corrosion
  • Nanotechnology
  • Browse content in Mathematics
  • Applied Mathematics
  • Biomathematics and Statistics
  • History of Mathematics
  • Mathematical Education
  • Mathematical Finance
  • Mathematical Analysis
  • Numerical and Computational Mathematics
  • Probability and Statistics
  • Pure Mathematics
  • Browse content in Neuroscience
  • Cognition and Behavioural Neuroscience
  • Development of the Nervous System
  • Disorders of the Nervous System
  • History of Neuroscience
  • Invertebrate Neurobiology
  • Molecular and Cellular Systems
  • Neuroendocrinology and Autonomic Nervous System
  • Neuroscientific Techniques
  • Sensory and Motor Systems
  • Browse content in Physics
  • Astronomy and Astrophysics
  • Atomic, Molecular, and Optical Physics
  • Biological and Medical Physics
  • Classical Mechanics
  • Computational Physics
  • Condensed Matter Physics
  • Electromagnetism, Optics, and Acoustics
  • History of Physics
  • Mathematical and Statistical Physics
  • Measurement Science
  • Nuclear Physics
  • Particles and Fields
  • Plasma Physics
  • Quantum Physics
  • Relativity and Gravitation
  • Semiconductor and Mesoscopic Physics
  • Browse content in Psychology
  • Affective Sciences
  • Clinical Psychology
  • Cognitive Psychology
  • Cognitive Neuroscience
  • Criminal and Forensic Psychology
  • Developmental Psychology
  • Educational Psychology
  • Evolutionary Psychology
  • Health Psychology
  • History and Systems in Psychology
  • Music Psychology
  • Neuropsychology
  • Organizational Psychology
  • Psychological Assessment and Testing
  • Psychology of Human-Technology Interaction
  • Psychology Professional Development and Training
  • Research Methods in Psychology
  • Social Psychology
  • Browse content in Social Sciences
  • Browse content in Anthropology
  • Anthropology of Religion
  • Human Evolution
  • Medical Anthropology
  • Physical Anthropology
  • Regional Anthropology
  • Social and Cultural Anthropology
  • Theory and Practice of Anthropology
  • Browse content in Business and Management
  • Business Strategy
  • Business Ethics
  • Business History
  • Business and Government
  • Business and Technology
  • Business and the Environment
  • Comparative Management
  • Corporate Governance
  • Corporate Social Responsibility
  • Entrepreneurship
  • Health Management
  • Human Resource Management
  • Industrial and Employment Relations
  • Industry Studies
  • Information and Communication Technologies
  • International Business
  • Knowledge Management
  • Management and Management Techniques
  • Operations Management
  • Organizational Theory and Behaviour
  • Pensions and Pension Management
  • Public and Nonprofit Management
  • Social Issues in Business and Management
  • Strategic Management
  • Supply Chain Management
  • Browse content in Criminology and Criminal Justice
  • Criminal Justice
  • Criminology
  • Forms of Crime
  • International and Comparative Criminology
  • Youth Violence and Juvenile Justice
  • Development Studies
  • Browse content in Economics
  • Agricultural, Environmental, and Natural Resource Economics
  • Asian Economics
  • Behavioural Finance
  • Behavioural Economics and Neuroeconomics
  • Econometrics and Mathematical Economics
  • Economic Systems
  • Economic History
  • Economic Methodology
  • Economic Development and Growth
  • Financial Markets
  • Financial Institutions and Services
  • General Economics and Teaching
  • Health, Education, and Welfare
  • History of Economic Thought
  • International Economics
  • Labour and Demographic Economics
  • Law and Economics
  • Macroeconomics and Monetary Economics
  • Microeconomics
  • Public Economics
  • Urban, Rural, and Regional Economics
  • Welfare Economics
  • Browse content in Education
  • Adult Education and Continuous Learning
  • Care and Counselling of Students
  • Early Childhood and Elementary Education
  • Educational Equipment and Technology
  • Educational Strategies and Policy
  • Higher and Further Education
  • Organization and Management of Education
  • Philosophy and Theory of Education
  • Schools Studies
  • Secondary Education
  • Teaching of a Specific Subject
  • Teaching of Specific Groups and Special Educational Needs
  • Teaching Skills and Techniques
  • Browse content in Environment
  • Applied Ecology (Social Science)
  • Climate Change
  • Conservation of the Environment (Social Science)
  • Environmentalist Thought and Ideology (Social Science)
  • Management of Land and Natural Resources (Social Science)
  • Natural Disasters (Environment)
  • Pollution and Threats to the Environment (Social Science)
  • Social Impact of Environmental Issues (Social Science)
  • Sustainability
  • Browse content in Human Geography
  • Cultural Geography
  • Economic Geography
  • Political Geography
  • Browse content in Interdisciplinary Studies
  • Communication Studies
  • Museums, Libraries, and Information Sciences
  • Browse content in Politics
  • African Politics
  • Asian Politics
  • Chinese Politics
  • Comparative Politics
  • Conflict Politics
  • Elections and Electoral Studies
  • Environmental Politics
  • Ethnic Politics
  • European Union
  • Foreign Policy
  • Gender and Politics
  • Human Rights and Politics
  • Indian Politics
  • International Relations
  • International Organization (Politics)
  • Irish Politics
  • Latin American Politics
  • Middle Eastern Politics
  • Political Methodology
  • Political Communication
  • Political Philosophy
  • Political Sociology
  • Political Behaviour
  • Political Economy
  • Political Institutions
  • Political Theory
  • Politics and Law
  • Politics of Development
  • Public Administration
  • Public Policy
  • Qualitative Political Methodology
  • Quantitative Political Methodology
  • Regional Political Studies
  • Russian Politics
  • Security Studies
  • State and Local Government
  • UK Politics
  • US Politics
  • Browse content in Regional and Area Studies
  • African Studies
  • Asian Studies
  • East Asian Studies
  • Japanese Studies
  • Latin American Studies
  • Middle Eastern Studies
  • Native American Studies
  • Scottish Studies
  • Browse content in Research and Information
  • Research Methods
  • Browse content in Social Work
  • Addictions and Substance Misuse
  • Adoption and Fostering
  • Care of the Elderly
  • Child and Adolescent Social Work
  • Couple and Family Social Work
  • Direct Practice and Clinical Social Work
  • Emergency Services
  • Human Behaviour and the Social Environment
  • International and Global Issues in Social Work
  • Mental and Behavioural Health
  • Social Justice and Human Rights
  • Social Policy and Advocacy
  • Social Work and Crime and Justice
  • Social Work Macro Practice
  • Social Work Practice Settings
  • Social Work Research and Evidence-based Practice
  • Welfare and Benefit Systems
  • Browse content in Sociology
  • Childhood Studies
  • Community Development
  • Comparative and Historical Sociology
  • Disability Studies
  • Economic Sociology
  • Gender and Sexuality
  • Gerontology and Ageing
  • Health, Illness, and Medicine
  • Marriage and the Family
  • Migration Studies
  • Occupations, Professions, and Work
  • Organizations
  • Population and Demography
  • Race and Ethnicity
  • Social Theory
  • Social Movements and Social Change
  • Social Research and Statistics
  • Social Stratification, Inequality, and Mobility
  • Sociology of Religion
  • Sociology of Education
  • Sport and Leisure
  • Urban and Rural Studies
  • Browse content in Warfare and Defence
  • Defence Strategy, Planning, and Research
  • Land Forces and Warfare
  • Military Administration
  • Military Life and Institutions
  • Naval Forces and Warfare
  • Other Warfare and Defence Issues
  • Peace Studies and Conflict Resolution
  • Weapons and Equipment

The Oxford Handbook of Supply Chain Management

  • < Previous chapter
  • Next chapter >

14 Supply Chain Distribution Strategy

Yanzhi Li, City University of Hong Kong

  • Published: 06 August 2020
  • Cite Icon Cite
  • Permissions Icon Permissions

Distribution strategy deals with the journey of products, from the completion of production all the way to the hands of customers. It aims to get the products to the right place at the right time, in the right quantity, and at the right price. An effective distribution strategy requires a distribution network that balances the distribution cost with service level. The connectivity empowered by the Internet and particularly mobile broadband accelerates the information exchange in the supply chain, enables new business models, and demands a more connected, customer-driven, and responsive distribution network. Empowered by data technologies, the distribution network is becoming increasingly proactive and integrated. More research is called on to study the new challenges and research issues resulting from technological advancements and new business models.

Personal account

  • Sign in with email/username & password
  • Get email alerts
  • Save searches
  • Purchase content
  • Activate your purchase/trial code
  • Add your ORCID iD

Institutional access

Sign in with a library card.

  • Sign in with username/password
  • Recommend to your librarian
  • Institutional account management
  • Get help with access

Access to content on Oxford Academic is often provided through institutional subscriptions and purchases. If you are a member of an institution with an active account, you may be able to access content in one of the following ways:

IP based access

Typically, access is provided across an institutional network to a range of IP addresses. This authentication occurs automatically, and it is not possible to sign out of an IP authenticated account.

Choose this option to get remote access when outside your institution. Shibboleth/Open Athens technology is used to provide single sign-on between your institution’s website and Oxford Academic.

  • Click Sign in through your institution.
  • Select your institution from the list provided, which will take you to your institution's website to sign in.
  • When on the institution site, please use the credentials provided by your institution. Do not use an Oxford Academic personal account.
  • Following successful sign in, you will be returned to Oxford Academic.

If your institution is not listed or you cannot sign in to your institution’s website, please contact your librarian or administrator.

Enter your library card number to sign in. If you cannot sign in, please contact your librarian.

Society Members

Society member access to a journal is achieved in one of the following ways:

Sign in through society site

Many societies offer single sign-on between the society website and Oxford Academic. If you see ‘Sign in through society site’ in the sign in pane within a journal:

  • Click Sign in through society site.
  • When on the society site, please use the credentials provided by that society. Do not use an Oxford Academic personal account.

If you do not have a society account or have forgotten your username or password, please contact your society.

Sign in using a personal account

Some societies use Oxford Academic personal accounts to provide access to their members. See below.

A personal account can be used to get email alerts, save searches, purchase content, and activate subscriptions.

Some societies use Oxford Academic personal accounts to provide access to their members.

Viewing your signed in accounts

Click the account icon in the top right to:

  • View your signed in personal account and access account management features.
  • View the institutional accounts that are providing access.

Signed in but can't access content

Oxford Academic is home to a wide variety of products. The institutional subscription may not cover the content that you are trying to access. If you believe you should have access to that content, please contact your librarian.

For librarians and administrators, your personal account also provides access to institutional account management. Here you will find options to view and activate subscriptions, manage institutional settings and access options, access usage statistics, and more.

Our books are available by subscription or purchase to libraries and institutions.

Month: Total Views:
October 2022 12
November 2022 16
December 2022 5
January 2023 23
February 2023 21
March 2023 13
April 2023 8
May 2023 4
June 2023 8
July 2023 3
August 2023 13
September 2023 5
October 2023 11
November 2023 9
December 2023 3
January 2024 8
February 2024 14
March 2024 10
April 2024 11
May 2024 20
June 2024 9
July 2024 4
August 2024 2
  • About Oxford Academic
  • Publish journals with us
  • University press partners
  • What we publish
  • New features  
  • Open access
  • Rights and permissions
  • Accessibility
  • Advertising
  • Media enquiries
  • Oxford University Press
  • Oxford Languages
  • University of Oxford

Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide

  • Copyright © 2024 Oxford University Press
  • Cookie settings
  • Cookie policy
  • Privacy policy
  • Legal notice

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

To read this content please select one of the options below:

Please note you do not have access to teaching notes, distribution network design: a literature review and a research agenda.

International Journal of Physical Distribution & Logistics Management

ISSN : 0960-0035

Article publication date: 1 June 2015

The purpose of this paper is threefold. First, it classifies research on distribution network design (DND) according to the methodologies adopted and themes tackled. Second, it discusses the main implications for practitioners. Finally, it proposes a few promising directions for future research.

Design/methodology/approach

The review is based on 126 papers published from 1972 to 2013 in international peer-reviewed journals in the Business, Management and Economics field. The academic papers have been analyzed and classified based on the main research methods used and the themes tackled.

It was found that most of the earlier research adopted quantitative models to deal with different decisions on DND, whereas the number of conceptual papers, proposing frameworks and classifications, is still limited. In all, 42 factors that affect DND have been identified and classified into five groups, and the relationships between factor groups and strategic decisions have been investigated. This study revealed that some important areas have not received much attention in the literature and, therefore, three potential directions for further research have been identified.

Research limitations/implications

Due to the extremely large number of papers on DND, it is possible that a few papers may have inadvertently been missed. Despite the possibility of not being all-inclusive, the authors firmly believe that the general picture presented in this paper is precise and trustworthy.

Originality/value

This review offers valuable insights for practitioners: a clear understanding of the main decisions related to DND; a comprehensive analysis of the main factors that affect the distribution network structure; a clear understanding of the relationships between factor groups and key decisions; and a guide to the models that can be used to support the different phases of DND.

  • Literature review
  • Supply chain management
  • Distribution network design
  • Logistics network
  • Strategic decisions

Mangiaracina, R. , Song, G. and Perego, A. (2015), "Distribution network design: a literature review and a research agenda", International Journal of Physical Distribution & Logistics Management , Vol. 45 No. 5, pp. 506-531. https://doi.org/10.1108/IJPDLM-02-2014-0035

Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited

Related articles

All feedback is valuable.

Please share your general feedback

Report an issue or find answers to frequently asked questions

Contact Customer Support

A Study on Distribution Channel Strategy: Retailers’ Perspective

Rangasamy, S., Krishnan, S. G., Rawath, S., Rakshith, M., & Ajith Kumar, S. (2022, September 27). A STUDY ON DISTRIBUTION CHANNEL STRATEGY: RETAILERS’ PERSPECTIVE. International Journal for Innovative Engineering and Management Research, 11(9), 240–252. https://doi.org/10.48047/IJIEMR/V11/ISSUE09/28

13 Pages Posted: 28 Dec 2022

Dr.R. Satheeshkumar

Surana College Centre for Post Graduate Studies

Dr. S. Gokula Krishnan

Surana College Autonomous; Surana College Centre for Post Graduate Studies

S. Sushma Rawath

Centre for Post Graduate Studies, Surana College, Bengaluru

Ajith Kumar S. J

Manipal Academy of Higher Education (MAHE)

Independent

Date Written: September 27, 2022

Distribution channel strategy plays significant role in distribution of goods and services to the end customers at the right place and at the right time. The purpose of this article is to identify the retailers’ perspective on distribution channel strategy of XYZ Masala Brand and to assess the retailers’ satisfaction level with XYZ Masala Brand. Primary data were collected through questionnaire from 100 retailers. Researcher has presented the outcome of the research work with the support of descriptive analysis, ANOVA, Correlation and Regression Analysis in a descriptive manner. The study revealed that blocks that retailers belong significantly do not differ on the familiarity of retailers with other product categories of XYZ masala brand and communication of company executives about the schemes on time. Retailers’ satisfaction level with the sale of XYZ Masala Brand is significantly and positively correlated at 0.01 significance level with Quality of XYZ Masala Brand.

Keywords: Distribution Channel, Distribution Strategy, Retailers, Masala Brand, Channel Partners and Competitive Advantage

JEL Classification: M00

Suggested Citation: Suggested Citation

Surana College Centre for Post Graduate Studies ( email )

Kengeri Bengaluru, 560060 India 9487271346 (Phone)

Dr. S. Gokula Krishnan (Contact Author)

Surana college autonomous ( email ).

#16, South End Road, Basavangudi South End Campus Bangalore, KS 560004 India

Centre for Post Graduate Studies, Surana College, Bengaluru ( email )

Manipal academy of higher education (mahe) ( email ), independent ( email ), do you have a job opening that you would like to promote on ssrn, paper statistics, related ejournals, organizations & markets: policies & processes ejournal.

Subscribe to this fee journal for more curated articles on this topic

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • View all journals
  • Explore content
  • About the journal
  • Publish with us
  • Sign up for alerts
  • Review Article
  • Special issue: Topics from The 45 the Annual Scientific meeting of the Japanese Society of Hypertension (JSH 2024)
  • Open access
  • Published: 29 August 2024

Obstructive sleep apnea -related hypertension: a review of the literature and clinical management strategy

  • Kazuki Shiina 1  

Hypertension Research ( 2024 ) Cite this article

Metrics details

Obstructive Sleep Apnea (OSA) and hypertension have a high rate of co-occurrence, with OSA being a causative factor for hypertension. Sympathetic activity due to intermittent hypoxia and/or fragmented sleep is the most important mechanisms triggering the elevation in blood pressure in OSA. OSA-related hypertension is characterized by resistant hypertension, nocturnal hypertension, abnormal blood pressure variability, and vascular remodeling. In particular, the prevalence of OSA is high in patients with resistant hypertension, and the mechanism proposed includes vascular remodeling due to the exacerbation of arterial stiffness by OSA. Continuous positive airway pressure therapy is effective at lowering blood pressure, however, the magnitude of the decrease in blood pressure is relatively modest, therefore, patients often need to also take antihypertensive medications to achieve optimal blood pressure control. Antihypertensive medications targeting sympathetic pathways or the renin-angiotensin-aldosterone system have theoretical potential in OSA-related hypertension, Therefore, beta-blockers and renin-angiotensin system inhibitors may be effective in the management of OSA-related hypertension, but current evidence is limited. The characteristics of OSA-related hypertension, such as nocturnal hypertension and obesity-related hypertension, suggests potential for angiotensin receptor-neprilysin inhibitor (ARNI), sodium-glucose cotransporter 2 inhibitors (SGLT2i) and glucose-dependent insulinotropic polypeptide receptor/ glucagon-like peptide-1 receptor agonist (GIP/GLP-1 RA). Recently, OSA has been considered to be caused not only by upper airway anatomy but also by several non-anatomic mechanisms, such as responsiveness of the upper airway response, ventilatory control instability, and reduced sleep arousal threshold. Elucidating the phenotypic mechanisms of OSA may potentially advance more personalized hypertension treatment strategies in the future.

literature review on distribution strategy

Clinical characteristics and management strategy of OSA-related hypertension. OSA obstructive sleep apnea, BP blood pressure, ABPM ambulatory blood pressure monitoring, CPAP continuous positive airway pressure, LVH left ventricular hypertrophy, ARB: angiotensin II receptor blocker, SGLT2i Sodium-glucose cotransporter 2 inhibitors, ARNI angiotensin receptor-neprilysin inhibitor, CCB calcium channel blocker, GIP/GLP-1 RA glucose-dependent insulinotropic polypeptide receptor and glucagon-like peptide-1 receptor agonist.

Introduction

Obstructive sleep apnea (OSA) is characterized by recurrent episodes of complete or partial collapse of the upper airway during sleep, resulting in apnea or hypopnea, and is recognized as an independent risk factor for cardiovascular disease such as hypertension, heart failure, arrhythmia, and coronary heart disease [ 1 , 2 ]. OSA increases blood pressure (BP) by enhancing various risk factors including the sympathetic nervous system, renin-angiotensin-aldosterone system (RAAS), and inflammation through mechanisms such as obesity, decreased intrathoracic pressure, pulmonary stretch receptor stimulation, chemoreceptor stimulation, hypoxemia, and hypercapnia [ 3 , 4 ]. The 2023 European Society of Hypertension (ESH) Guidelines for the diagnosis and treatment of hypertension emphasize the importance of the obese state and of the metabolic syndrome, one of the causes of hypertension, as the main partially reversible risk factors for OSA [ 5 ].

The presence of OSA has been related to an increase in the prevalence and incidence of hypertension, regardless of other factors (OR: 1.5–2.9) [ 6 , 7 ]. In fact, approximately 30–50% of hypertensive patients have OSA, whereas 50% of patients with OSA present hypertension [ 6 ], especially about 80% of patients with resistant hypertension have OSA. Therefore, screening for OSA is recommended in patients with resistant hypertension [ 8 , 9 ].

This review aims to summarize the latest findings on the clinical features of OSA-related hypertension to its treatment strategies.

Symptoms and clinical findings in OSA

In patients with OSA, extremely loud snoring and sleep apnea are typical symptoms, often prompting visits based on the partner’s observations (Table  1 ). However, the rational clinical examination systematic review by Myers, et al. [ 10 ] reported that the most useful observation for identifying patients with OSA was nocturnal choking or gasping (summary likelihood ratio [LR], 3.3; 95% CI, 2.1–4.6) when the diagnosis was established by apnea-hypopnea index: AHI ≥ 10/h). Snoring is common in OSA patients but is not useful for establishing the diagnosis (summary LR, 1.1; 95% CI, 1.0–1.1). Daytime excessive sleepiness is a common subjective clinical symptom, although it has been reported that awareness of symptoms is often lacking [ 11 ], particularly among patients with cardiovascular diseases [ 12 , 13 ]. As there is controversy regarding the association of morning headache and obstructive sleep apnea syndrome (OSAS), Goksan, et al. demonstrated that prevalence of morning headache increases with increasing OSAS severity [ 14 ]. Atrial stretch due to the large negative pressure swings by OSA results in secretion of atrial natriuretic peptide, causing nocturia. The prevalence of OSA increases with factors such as obesity and aging, but in Asia, there are many non-obese OSA patients related to craniofacial bony restriction [ 15 ].

Therefore, when examining hypertensive patients, it is important to pay attention to typical symptoms such as sleepiness and abnormalities in facial and pharyngeal morphology, even in non-obese patients, and to actively perform OSA screening tests when these abnormalities are suspected. Additionally, it is necessary to actively suspect OSA in patients with left ventricular hypertrophy (LVH), aortic disease, atrial fibrillation (AF), and those undergoing dialysis [ 9 ].

New concept of mechanisms in OSA

Recently, OSA has been considered to be caused not only by upper airway anatomy but also by several non-anatomic mechanisms [ 16 ]. These factors include the responsiveness of the upper airway responce, ventilatory control instability [ 17 ], and reduced sleep arousal threshold [ 18 ]. The relative contributions of these processes may vary from one patient to another and have therapeutic implications [ 19 ]. For example, upper-airway stimulation device is a new treatment for OSA that targets the responsiveness of the upper airway response [ 20 ]. Future treatments for OSA-related hypertension may need to consider these phenotypes.

Hypertension Risk and OSA

OSA and hypertension are not merely comorbidities; OSA itself can potentially be a causative factor for hypertension. The Wisconsin Sleep Cohort study, a prospective, community-based study, it has been demonstrated that an increase in AHI independently of age and body mass index (BMI) is associated with the new-onset hypertension [ 6 ]. In contrast, the 5-year follow-up study of the Sleep Heart Health Study, conducted with 2470 participants without hypertension at admission, found that after adjusting for BMI, AHI was no longer a significant predictor of hypertension [ 21 ]. The findings that do not support the relationship between OSA and hypertension were attributed to the lower rate of participants with moderate to severe OSA. Indeed, the vast majority of the participants included in the 5-year follow-up of the Sleep Heart Health Study had mild OSA [ 21 ]. On the other hand, Marin, et al. demonstrated that the presence of OSA was associated with increased adjusted risk of incident hypertension in a large prospective cohort study (median follow-up periods 12.2 years) without hypertension [ 22 ]. The incidence of hypertension increased with severity of OSA. These findings suggest that untreated “severe” OSA is independently of BMI associated with an increased risk for developing new-onset hypertension, and there is a “dose–response” relation between OSA and the risk of developing hypertension.

Pathogenesis of Hypertension in OSA

The mechanisms promoting hypertension in OSA are multifactorial and complex. Sympathetic activity due to intermittent hypoxia and/or fragmented sleep is the most important mechanisms triggering the elevation in BP in OSA. The pathophysiology begins with obstructed airfow into the lungs, which causes transient hypoxia and hypercapnia. The sympathetic nervous system is activated simultaneously by these repetitive blood gas derangements, which stimulate both central and peripheral chemoreceptors, apnea-induced cessation of pulmonary stretch receptor-mediated inhibition of central sympathetic outflow, and silencing of sympathoinhibitory input from carotid sinus baroreceptors by reductions in stroke volume and BP during obstructive apneas. When the apnea is interrupted by arousal from sleep, the latter process simultaneously augments sympathetic nervous activity and reduces cardiac vagal activity [ 3 , 4 , 23 ]. The result is a postapneic surge in BP [ 24 ].

These acute adverse effects of OSA on the autonomic nervous system are not confined to sleep. Patients with OSA and cardiac dysfunction also have elevated sympathetic nervous activity and depressed cardiac vagal activity when awake [ 23 ]. The mechanisms for such daytime carryover effects remain unclear but may relate to the adaptation of chemoreceptor reflexes or central processes governing autonomic outflow.

Consequently, RAAS is activated, the endothelin-1 level is increased, and the nitric oxide level is decreased, all of which contribute to the increase in vascular resistance and the development of hypertension [ 25 , 26 ]. Sympathetic hyperactivity leads to a proinflammatory state, resulting in endothelial dysfunction and increased arterial stiffness [ 27 , 28 , 29 ].

Characteristics of OSA-related HT

Resistant hypertension.

Resistant hypertension is defined as BP that is uncontrolled despite using ≥3 medications of different classes (Table  2 ), commonly a long-acting calcium channel blocker (CCB), angiotensin converting enzyme inhibitor (ACEI) or angiotensin II receptor blocker (ARB) and a diuretic (Fig.  1 ). Multiple studies have demonstrated a high prevalence of OSA in patients with resistant hypertension. The prevalence is reported to be 70–80% [ 30 , 31 , 32 , 33 , 34 ]. Several mechanisms may exlain the potential role of OSA in promoting resistant hypertension [ 35 ]. These include sympathetic nervous system activation, endothelial dysfunction, increased arterial stiffness, and fluid retention due to OSA. Among these mechanisms, increased arterial stiffness due to OSA is a major cause of resistant hypertension. Roderjan et al. reported that among resistant hypertensives, the more severe the apnea was associated with the greater the arterial stiffness, and that patients with increased pulse wave velocity (PWV) have an adverse clinical and polysomnographic profile pointing to a higher cardiovascular risk, especially women, patients with true resistant hypertension [ 36 ]. We have demonstrated that OSA and metabolic syndrome were independently associated with elevated PWV in large Sleep Cohort [ 29 ]. Although it is not clear what the roles of arterial stiffness in contributing to resistant hypertension are, it is reasonable to speculate that the vascular remodeling promoted by OSA may exacerbate BP in patients with hypertension [ 37 ].

figure 1

Proposed pathways through which OSA may contribute to the development of resistant hypertension. OSA obstructive sleep apnea, RAAS RAAS: renin–angiotensin– aldosterone system, T2DM type 2 diabetes mellitus, CKD chronic kidney disease, ASCVD atherosclerotic cardiovascular disease

Non-dipper phenomenon

OSA-related hypertension is predominantly nocturnal and characterized by a non-dipping pattern [ 38 , 39 , 40 ]. Systolic BP (SBP) and diastolic BP (DBP) reduce by ~10 mmHg (about 10–20%) during sleep, but this dipping phenomenon is reversed in those with OSA. The prevalence of non-dipping was 84% in a population of untreated patients with mild to severe OSA [ 41 ]. OSA increases sympathetic nerve activity due to arousals in sleep, which counteracts the normal nocturnal BP dip and results in increased intravascular pressure. This chronic hypertension leads to vascular remodeling, decreased endothelial production of vasodilatory nitric oxide, and insensitive baroreceptors, further inhibiting the reflex of nocturnal BP dip [ 28 , 42 , 43 ]. In patients with severe OSA, positive airway pressure (CPAP) turns a non-dipping into a dipping BP profile [ 44 ].

BP variability (BPV)

In OSA, BP variability (BPV) has been studied mainly as very short-term (beat-to-beat) and short-term (24-hour BP profile) variability [ 45 , 46 ].

BP measured on consecutive heartbeats has been demonstrated to be highly variable, due to repeated peaks during sleep, so that an accurate assessment of nocturnal BP levels in OSA may require peculiar methodologies [ 47 , 48 , 49 , 50 ].

Consistent evidence indicates that the presence of OSA may be associated with increased short-term BPV, but the information on its relationship with long-term BPV, assessed on a visit-to-visit variability (VVV) is limited [ 51 ]. We observed that patients with severe OSA had significantly higher systolic VVV than controls matched for age, BMI and SBP [ 52 ]. Moreover, in this study, the plasma noradrenaline level and the AHI were independently and positively correlated with VVV and VVV was significantly reduced by CPAP. In a different study, Kansui et al. demonstrated the impact of OSA on long-term (yearly) BPV in Japanese work-site population [ 53 ].

Inter-arm BP difference

Inter-arm SBP difference (IAD) is a non-invasively and easily measurable parameter. Recent evidence suggests the existence of correlations between IAD and the risk of cardiovascular events and mortality in patients with hypertension, diabetes mellitus, and coronary artery disease, as also in the general population [ 54 ]. IAD of BP is important but the measurement methodology has a major influence on IAD results. According to a meta-analysis, the number of subjects with a systolic and diastolic IAD ≥ 10 mmHg was significantly lower when BP measurements were performed simultaneously instead of sequentially [ 55 ]. This could have overestimated the prevalence of IAD ≥ 10 mmHg. The results from Tokyo Sleep Heart Study, moderate to severe OSA was independently associated with the IAD accessed by simultaneously BP measurements [ 56 ]. The plausible explanation is that the negative intrathoracic pressure caused by OSA may exert an adverse impact on the structural properties of the thoracic aorta.

Cardiovascular damage by OSA-related HT

Cardiac morphology and function, left ventricular hypertrophy (lvh).

Several studies have observed an association between OSA and LVH [ 57 , 58 , 59 ], but it has been difficult to demonstrate an association between OSA and higher LVH independent of obesity and hypertension. Indeed, Usui, et al. demonstrated that no significant differences in left ventricular mass index by OSA severity in 74 healthy non-obese men [ 60 ]. However, recent meta-analysis showed that OSA was significantly associated with an increased risk of LVH (OR = 1.70, 95% CI 1.44–2.00, P < 0.001) [ 61 ]. Although significant variability in prevalence estimates exists between studies, recent meta-analysis suggests that in the OSA setting concentric LVH is more frequent than eccentric LVH [ 62 ].

Left ventricular systolic function

Literature reports concerning left ventricular systolic function in OSA patients are controversial. The meta-analysis by Yu, et al. demonstrated that significant decreases in left ventricular ejection fraction (LVEF) were observed in OSAS patients [ 63 ], however, the alterations in LVEF seemed not to be remarkable enough to induce obvious clinical symptoms of LV dysfunction. Recent study demonstrated that global longitudinal strain (GLS), a more sensitive measurement of LV systolic function, is impaired in patients with OSA, thus allowing to identify subclinical alterations of the systolic function not captured by LVEF [ 64 ].

Left ventricular diastolic function

Several studies demonstrated the association between OSA and echocardiographic parameters of left ventricular diastolic dysfunction. Wachter, et al. reported that moderate-to-severe OSA is independently associated with diastolic dysfunction in a primary care cohort of 352 patients with cardiovascular risk factors [ 65 ]. OSA may be independently associated with left ventricular diastolic dysfunction perhaps due to higher LV mass [ 66 ]. Usui, et al. reported that coexistence of OSA and metabolic syndrome is independently associated with LVH and diastolic dysfunction in Japanese sleep cohort [ 67 ]. Clinicians should pay attention to the significance of the coexistence of these disorders so as to prevent the development of heart failure with preserved LVEF.

Based on these results, although comorbidities such as hypertension play a role in OSA, it is particularly associated with LVH and decreased left ventricular diastolic function. Therefore, it is important to consider the presence of OSA in patients with hypertension that exhibits these characteristics.

Atrial fibrillation (AF)

The prevalence of OSA in patients with atrial fibrillation (AF) is extremely high [ 68 , 69 ], making screening for OSA essential in these patients. The high-frequency intermittent hypoxia, negative intrathoracic pressure, atrial stretching, neurohumoral activation, and chronic concomitant conditions, such as hypertension, metabolic syndrome, and obesity, associated with OSA create progressive structural remodeling of the atrium [ 69 ]. This progressive atrial structural remodeling, along with the electrophysiological changes contributes to the reentry mechanism for AF and establishes an arrhythmogenic substrate in the atrium.

Recently, we reported that nutritional status and sleep quality are associated with AF in patients with OSA [ 70 ]. Undernutrition, as assessed by the CONtrolling NUTritional status (CONUT) score [ 71 ], and reduced slow-wave sleep were factors significantly related to the presence of AF. The CONUT scores were calculated from total peripheral lymphocyte counts, the serum albumin levels, and total cholesterol levels. On the other hand, several meta-analyses have demonstrated that CPAP therapy [ 72 , 73 ] suppresses the recurrence of pulmonary vein isolation for AF. Therefore, CPAP therapy should also be actively considered in managing BP and preventing AF recurrence in OSA-related hypertension with AF.

Vascular remodeling

A potential pathophysiological role linking OSA to vascular remodeling (i.e., progressive aortic dilatation, increased risk for aneurysms, and aortic dissection) has been reported by several clinical studies [ 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 ]. Pathophysiological conditions associated with the development of these vascular remodeling in OSA include negative intrathoracic pressure, increased BP via sympathetic hyperactivity, and oxidative stress via cyclical hypoxemia-reoxygenation due to OSA (Fig.  2 ). Recent meta-analysis actually showed that aortic size was higher in patients with OSA than in their counterparts without OSA [ 75 ]. However, the results of this meta-analysis should be considered in the context of some limitations, such as the paucity of available data, and the methodological differences of the various studies.

figure 2

Vascular Damage by OSA. OSA: obstructive sleep apnea, FMD Flow mediated dilation, PWV pulse wave velocity

Regarding the relationship between aortic dissection (AD) and OSA severity, a greater relation was found between moderate-to-severe OSA and AD (OR 4.43; 95% CI 2.59–7.59) [ 79 ]. Gaisl, et al. demonstrated the strong evidence for a positive association of thoracic aortic aneurysms (TAA) expansion with AHI [ 80 ]. On the other hand, in abdominal aortic aneurysms (AAA) patients, the rate of aortic diameter enlargement was significantly higher by 2.2 mm/year in the population with an AHI ≥ 30/h compared with an AHI 0–5/h [ 81 ]. We also demonstrated that patients with TAA, AAA, and AD showed high incidences of moderate to severe OSA [ 82 ]. Negative intrathoracic pressure could theoretically dilate the thoracic aorta via increased stress in the aortic wall, but would have little effect on the abdominal aorta. However, it is inconclusive which of the thoracic and abdominal vasculatures OSA more strongly impacts.

Treatment of OSA-related hypertension

Among the treatment modalities that come to the fore in OSA-related hypertension are CPAP, antihypertensive medications (beta-blocker, diuretics, ARB and CCB), and renal denervation (RDN). There are currently no specific clinical recommendations on whether to prioritize CPAP or antihypertensive medications in OSA-related hypertension. However, in hypertensive patients with moderate to severe OSA accompanied by sleepiness, it is common to prioritize CPAP therapy to improve sleep quality. Weight loss, physical exercise, reducing alcohol consumption, and smoking cessation are among the primary lifestyle changes recommended for OSA-related hypertension [ 83 ].

CPAP therapy

A number of studies have demonstrated that CPAP has modest but significant BP-lowering effects of 2–7 mmHg in SBP and of 2–5 mmHg in DBP in OSA-related hypertension [ 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 ] (Fig.  3 ). The effect of CPAP on BP varies among patients (Fig.  3 ). Higher BMI, severe OSA (AHI ≥ 30), hypersomnolence, higher BP values, untreated hypertension, nocturnal hypertension, treatment-resistant hypertension and adherence to CPAP are variables that have been associated with a greater improvement in BP in several studies [ 92 , 93 , 94 , 95 , 96 , 97 ]. HIPARCO RCT found a significant correlation between CPAP usage and reductions in 24-h mean BP, SBP, and DBP [ 98 ]. Best results for quality of life improvements and optimal reductions in BP occur when CPAP usage exceeds 4 hour/night [ 87 , 99 ]. Furthermore, recent meta-analyses suggest an even higher degree of daily CPAP adherence (at least 4.0–5.5 hour/night) to improve BP in patients with resistant hypertension and sleepiness [ 100 ].

figure 3

Recent meta-analyses regarding the effect of CPAP treatment on blood pressure. CPAP Continuous positive airway pressure, SBP Systolic blood pressure, DBP Diastolic blood pressure

In the patients with non-sleepy OSA, CPAP therapy have no overall beneficial effects on subjective sleepiness, SBP, or cardiovascular risk compared with no active therapy. OSA patients who were less sleepy had lower BMI and lower CPAP adherence. This probably might be due to a lower respiratory arousal threshold. Comprehensive management including an active lifestyle and regular support of CPAP use is key to managing this kind of OSA [ 101 ]. Furthermore, CPAP withdrawal results in a clinically relevant increase in BP (office SBP): +5.4 mm Hg, home SBP : +9.0 mm Hg), which is considerably higher than in conventional CPAP trials [ 102 ].

In patients with nocturnal hypertension (non-dipper/riser types), CPAP often selectively lowers BP during sleep, leading to a normal dipper pattern [ 103 ]. In the aforementioned studies, HIPARCO RCT, among patients with OSA and resistant hypertension, CPAP treatment for 12 weeks compared with control resulted in a decrease in 24 h mean (−3.1 mmHg) and DBP (−3.2 mmHg) and an improvement in the nocturnal BP pattern [ 98 ].

As mentioned above, the antihypertensive effects of CPAP are modest. However, CPAP therapy exert beneficial effects on sympathovagal balance and arterial stiffness, independent of BP lowering [ 104 ]. Therefore, patients with moderate-to- severe OSA-related hypertension should undergo CPAP therapy as a first-line treatment.

Antihypertensive medications

CPAP therapy is effective at lowering BP, however, the magnitude of the decrease in BP is relatively modest, therefore, patients often need to also take antihypertensive medications to achieve optimal BP control (Table  3 ). However, current guidelines do not specify what type of antihypertensive therapy should be offered to patients with OSA and concomitant hypertension [ 5 , 8 ]. An earlier study conducted by Kraiczi et al. compared the effects of atenolol, hydrochlorothiazide, amlodipine, enalapril, and losartan on office and ambulatory BP in 40 OSA-related hypertension patients [ 105 ]. Compared with the other four medications, atenolol lowered the office DBP as well as mean night-time ambulatory SBP and DBP. These findings support the hypothesis that overactivity of the sympathetic nervous system is the most important mechanism involved in the development of hypertension in patients with OSA. Kario, et al. reported the BP-lowering effects of CCBs and beta-blockers using a trigger sleep BP monitor with an oxygen-triggered function in OSA-related hypertension [ 106 ]. The BP-lowering effects of nifedipine on the mean and minimum sleep SBP were stronger than those of carvedilol, but sleep SBP surge was only significantly reduced by carvedilol.

On the other hand, in terms of suppressing organ damage, RAAS inhibitors, such as ARB, may be useful in patients with OSA-related hypertension, especially in obese patients, because the RAAS is hyperactive and LVH is a common complication [ 107 , 108 ].

Fluid retension from the lower extremities to the upper body during sleep is strongly associated with OSA in hypertensive patients. Therefore, in OSA patients with obesity and a fluid retention, diuretics may be beneficial. Spironolactone reduced the severity of OSA and reduced BP in resistant hypertension patients with moderate-to-severe OSA [ 109 , 110 ]. A propensity score-matched cohort analysis of data from the French national sleep apnea registry demonstrated that diuretics appear to have a positive impact on OSA severity in overweight or moderately obese patients with hypertension [ 111 ].

Recently, Svedmyr, et al. investigated 5970 hypertensive patients with OSA on current antihypertensive treatment from the European Sleep Apnea Database (ESADA) cohort [ 112 ]. Monotherapy with beta-blocker was associated with lower SBP, particularly in non-obese middle-aged males with hypertension. Conversely, the combination of a beta-blocker and a diuretic was associated with lower SBP and DBP in hypertensive patients with moderate–severe OSA. Furthermore, another report in ESADA cohort suggests that ACEI or ARB, alone or in combination with other drug classes, provides a particularly strong reduction of BP and better BP control when combined with CPAP in OSA [ 113 ]. Considering that CPAP will remove repetitive hypoxia, most arousals, and the chronic sympathetic activation, it is likely that other mechanisms, such as RAAS activation, may play a dominant role following OSA treatment. This is speculated to be the reason why ACEI or ARB were effective in the CPAP treated OSA.

Sodium-glucose cotransporter 2 inhibitors (SGLT2i)

A recent series of mega-scale clinical trials for sodium-glucose cotransporter 2 inhibitor (SGLT2i) indicated cardio-renal protective effects of SGLT2i [ 114 , 115 , 116 , 117 , 118 ], and some SGLT2is have now become the first-line treatment for T2DM with comorbid atherosclerotic cardiovascular disease (ASCVD) and heart failure. Furthermore, several studies have reported a lowering effect of SGLT2i on BP [ 119 , 120 ]. Although mechanisms underlying the BP-lowering effects of SGLT2i are unclear, SGLT2i presumably acts primarily by decreasing circulating plasma volume through osmotic and natriuretic diuresis in the early stages of administration and later by suppressing sympathetic nerve activity in the long term [ 121 , 122 ]. Wojeck, et al. reported that Ertugliflozin reduced incident OSA [ 123 ]. In the meta-analysis, Lin, et al. demonstrated that SGLT2i was shown to reduce AHI [ 124 ]. These results suggest that SGLT2i may not only have beneficial effects on OSA-related hypertension but also on OSA itself [ 125 ].

Angiotensin receptor-neprilysin inhibitor (ARNI)

The angiotensin receptor neprilysin inhibitor (ARNI) has recently been approved in Japan to treat hypertension [ 126 ]. Reductions in 24-hour, daytime, and nighttime BP have been documented during treatment with ARNI in patients with hypertension [ 127 , 128 , 129 ]. This potent 24-hour BP-lowering effects of ARNI may be effective for OSA-related hypertension characterized by resistant, nocturnal, and non-dipper hypertension [ 130 ]. Additionally, as previously mentioned, since OSA-related hypertension is associated with LVH [ 57 , 58 , 59 , 61 , 62 ] and left ventricular diastolic dysfunction [ 65 , 66 , 67 ], ARNI, which is characterized by so-called “reverse remodeling”, may be useful for OSA-related hypertension. Furthermore, in chronic heart failure patients with sleep apnea, ARNI treatment for 3 months in patients with OSA decreased the severity of OSA itself (the ENTRESTO-SAS study) [ 131 ].

However, both ARNI and SGLT2i are used in the United States to treat heart failure. In addition, there may be considerably less research on antihypertensive in OSA. Future research is needed to investigate the effect of ARNI and SGLT2i on BP in patients with OSA-related hypertension.

Glucose-dependent insulinotropic polypeptide receptor/ glucagon-like peptide-1 receptor agonist (GIP/GLP-1 RA)

Recently, a study evaluating the safety and efficacy of tirzepatide for the treatment of OSA and obesity was published (The SURMOUNT-OSA trials) [ 132 ]. Tirzepatide is a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor and glucagon-like peptide-1 (GLP-1) receptor agonist that selectively binds to and activates both the GIP and GLP-1 receptors. The SURMOUNT-OSA trials were two 52-week, phase 3, multicenter, parallel-group, double-blind, randomized, controlled trials that were conducted at 60 sites across nine countries to evaluate the efficacy and safety of the maximum tolerated dose of weekly tirzepatide (10 mg or 15 mg) in adults with moderate-to-severe OSA and obesity. In this trial, tirzepatide reduced the AHI, body weight, hypoxic burden, high-sensitivity C-reactive protein concentration, and SBP [Estimated treatment differences :−7.6 mmHg (95% CI, −10.5 to −4.8), P  < 0.001, not receiving CPAP group]. The effect of tirzepatide on OSA-related hypertension is expected in the future.

Renal denervation

Increased sympathetic activity, consistently evident in patients with OSA, plays a key role in the development of resistant hypertension [ 35 ]. Therefore, OSA-related hypertension may represent a promising indication for RDN. In an RCT conducted with moderate-to-severe OSA patients with resistant hypertension, Warchol-Celinska, et al. demonstrated that RDN safely provided significant BP reduction compared with the control group [ 133 ]. However, the effect of RDN for OSA-related hypertension remains unclear due to differences in research design and other factors, such as sham procedure, ablations catheter, treatment adherence, sample size, observational periods, etc. Further large scale studies are warranted to assess the impact of RDN on OSA and its relation to BP decline and cardiovascular risk.

Future directions

As previously mentioned, it has become clear that OSA is caused not only by upper airway anatomic factors but also by several non-anatomic mechanisms [ 16 , 17 , 18 , 19 ]. Therefore, it is hypothesized that the pathophysiology of OSA-related hypertension is also not a single condition but is divided into several phenotypes. Elucidating the phenotypic mechanisms of OSA may potentially advance more personalized hypertension treatment strategies in the future.

Conclusions

OSA occurs at a high prevalence in hypertensive patients, particularly those with resistant hypertension. Additionally, it is highly prevalent among AF patients, warranting OSA screening. OSA-related hypertension is characterized by morning hypertension, nocturnal hypertension, non-dipper pattern, increased BPV, and pronounced arterial remodeling. CPAP therapy is the gold standard therapy for OSA but its effects on BP are relatively modest, often requiring combination therapy with antihypertensive medications. While there is insufficient evidence regarding the choice of antihypertensive medications, beta-blockers, diuretics, and ARBs may be used as monotherapy or in combination therapy depending on individual cases. Further evaluation of the efficacy of novel agents such as SGLT2i and ARNI, and GIP/GLP-1 RA is necessary. Elucidating the phenotypic mechanisms of OSA may potentially advance more personalized hypertension treatment strategies in the future.

Marin JM, Carrizo SJ, Vicente E, Agusti AG. Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study. Lancet 2005;365:1046–53.

Article   PubMed   Google Scholar  

Yeghiazarians Y, Jneid H, Tietjens JR, Redline S, Brown DL, El-Sherif N, et al. Obstructive Sleep Apnea and Cardiovascular Disease: A Scientific Statement From the American Heart Association. Circulation 2021;144:e56–e67.

Article   CAS   PubMed   Google Scholar  

Javaheri S, Barbe F, Campos-Rodriguez F, Dempsey JA, Khayat R, Javaheri S, et al. Sleep Apnea: Types, Mechanisms, and Clinical Cardiovascular Consequences. J Am Coll Cardiol. 2017;69:841–58.

Article   PubMed   PubMed Central   Google Scholar  

Cowie MR, Linz D, Redline S, Somers VK, Simonds AK. Sleep Disordered Breathing and Cardiovascular Disease: JACC State-of-the-Art Review. J Am Coll Cardiol. 2021;78:608–24.

Mancia G, Kreutz R, Brunstrom M, Burnier M, Grassi G, Januszewicz A, et al. 2023 ESH Guidelines for the management of arterial hypertension. J Hypertens. 2023;41:1874–2071.

Peppard PE, Young T, Palta M, et al. Prospective study of the association between sleep-disordered breathing and hypertension. N. Engl J Med. 2000;342:1378–84.

Hou H, Zhao Y, Yu W, Dong H, Xue X, Ding J, et al. Association of obstructive sleep apnea with hypertension: a systematic review and meta-analysis. J Glob Health. 2018;8:010405.

Umemura S, Arima H, Arima S, Asayama K, Dohi Y, Hirooka Y, et al. The Japanese Society of Hypertension Guidelines for the Management of Hypertension (JSH 2019). Hypertens Res. 2019;42:1235–481.

Kasai T, et al. JCS 2023 Guideline on Diagnosis and Treatment of Sleep Disordered Breathing in Cardiovascular Disease. Circ J. (in press).

Myers KA, Mrkobrada M, Simel DL. Does this patient have obstructive sleep apnea?: The Rational Clinical Examination systematic review. JAMA 2013;310:731–41.

Young T, Palta M, Dempsey J, Skatrud J, Weber S, Badr S. The occurrence of sleep-disordered breathing among middle-aged adults. N Engl J Med. 1993;328:1230–5.

Hastings PC, Vazir A, O’Driscoll DM, Morrell MJ, Simonds AK. Symptom burden of sleep-disordered breathing in mild-to-moderate congestive heart failure patients. Eur Respir J. 2006;27:748–55.

Kadhim K, Middeldorp ME, Elliott AD, Jones D, Hendriks JML, Gallagher C, et al. Self-Reported Daytime Sleepiness and Sleep-Disordered Breathing in Patients With Atrial Fibrillation: SNOozE-AF. Can J Cardiol. 2019;35:1457–64.

Goksan B, Gunduz A, Karadeniz D, Ağan K, Tascilar FN, Tan F, et al. Morning headache in sleep apnoea: clinical and polysomnographic evaluation and response to nasal continuous positive airway pressure. Cephalalgia 2009;29:635–41.

Lee RW, Vasudavan S, Hui DS, Prvan T, Petocz P, Darendeliler MA, et al. Differences in craniofacial structures and obesity in Caucasian and Chinese patients with obstructive sleep apnea. Sleep 2010;33:1075–80.

Carberry JC, Amatoury J, Eckert DJ. Personalized Management Approach for OSA. Chest 2018;153:744–55.

Wellman A, Jordan AS, Malhotra A, Fogel RB, Katz ES, Schory K, et al. Ventilatory control and airway anatomy in obstructive sleep apnea. Am J Respir Crit Care Med. 2004;170:1225–32.

Eckert DJ, Owens RL, Kehlmann GB, Wellman A, Rahangdale S, Yim‐Yeh S, et al. Eszopiclone increases the respiratory arousal threshold and lowers the apnoea/hypopnoea index in obstructive sleep apnoea patients with a low arousal threshold. Clin Sci. 2011;120:505–14.

Article   Google Scholar  

Tietjens JR, Claman D, Kezirian EJ, De Marco T, Mirzayan A, Sadroonri B, et al. Obstructive Sleep Apnea in Cardiovascular Disease: A Review of the Literature and Proposed Multidisciplinary Clinical Management Strategy. J Am Heart Assoc. 2019;8:e010440.

Strollo PJ Jr, Soose RJ, Maurer JT, de Vries N, Cornelius J, Froymovich O, et al. Upper-airway stimulation for obstructive sleep apnea. N. Engl J Med. 2014;370:139–49.

O’Connor GT, Caffo B, Newman AB, Quan SF, Rapoport DM, Redline S, et al. Prospective study of sleep-disordered breathing and hypertension: the Sleep Heart Health Study. Am J Respir Crit Care Med. 2009;179:1159–64.

Marin JM, Agusti A, Villar I, Forner M, Nieto D, Carrizo SJ, et al. Association between treated and untreated obstructive sleep apnea and risk of hypertension. JAMA 2012;307:2169–76.

Article   CAS   PubMed   PubMed Central   Google Scholar  

Floras JS. Sympathetic nervous system activation in human heart failure: clinical implications of an updated model. J Am Coll Cardiol. 2009;54:375–85.

Kasai T, Floras JS, Bradley TD. Sleep apnea and cardiovascular disease: a bidirectional relationship. Circulation 2012;126:1495–510.

Jin ZN, Wei YX. Meta-analysis of effects of obstructive sleep apnea on the renin-angiotensin-aldosterone system. J Geriatr Cardiol. 2016;13:333–43.

CAS   PubMed   PubMed Central   Google Scholar  

Harańczyk M, Konieczyńska M, Płazak W. Endothelial dysfunction in obstructive sleep apnea patients. Sleep Breath. 2022;26:231–42.

Drager LF, Togeiro SM, Polotsky VY, Lorenzi-Filho G. Obstructive sleep apnea: a cardiometabolic risk in obesity and the metabolic syndrome. J Am Coll Cardiol. 2013;62:569–76.

Wang J, Yu W, Gao M, Zhang F, Gu C, Yu Y, et al. Impact of Obstructive Sleep Apnea Syndrome on Endothelial Function, Arterial Stiffening, and Serum Inflammatory Markers: An Updated Meta-analysis and Metaregression of 18 Studies. J Am Heart Assoc. 2015;4:e002454.

Shiina K, Tomiyama H, Takata Y, Usui Y, Asano K, Hirayama Y, et al. Concurrent presence of metabolic syndrome in obstructive sleep apnea syndrome exacerbates the cardiovascular risk: a sleep clinic cohort study. Hypertens Res. 2006;29:433–41.

Logan AG, Perlikowski SM, Mente A, Tisler A, Tkacova R, Niroumand M, et al. High prevalence of unrecognized sleep apnoea in drug-resistant hypertension. J Hypertens. 2001;19:2271–7.

Martínez-García MA, Gómez-Aldaraví R, Gil-Martínez T, Soler-Cataluña JJ, Bernácer-Alpera B, Román-Sánchez P. Sleep-disordered breathing in patients with difficult-to-control hypertension. Arch Bronconeumol. 2006;42:14–20.

Gonçalves SC, Martinez D, Gus M, de Abreu-Silva EO, Bertoluci C, Dutra I, et al. Obstructive sleep apnea and resistant hypertension: a case-control study. Chest 2007;132:1858–62.

Shiina K. Obstructive sleep apnea and cardiovascular disease. J Cardiol Jpn Ed. 2012;7:38–43.

Google Scholar  

Muxfeldt ES, Margallo VS, Guimarães GM, Salles GF. Prevalence and associated factors of obstructive sleep apnea in patients with resistant hypertension. Am J Hypertens. 2014;27:1069–78.

Genta-Pereira DC, Pedrosa RP, Lorenzi-Filho G, Drager LF. Sleep disturbances and resistant hypertension: association or causality? Curr Hypertens Rep. 2014;16:459.

Roderjan CN, de Hollanda Cavalcanti A, Cortez AF, Chedier B, Oliveira de Carvalho Carlos F, et al. Association between arterial stiffness and sleep apnoea in patients with resistant hypertension. J Hum Hypertens. 2022;36:1078–84.

Pickering TG. Arterial stiffness as a cause of resistant hypertension? J Clin Hypertens (Greenwich). 2007;9:390–5.

Baguet JP, Hammer L, Lévy P, Pierre H, Rossini E, Mouret S, et al. Night-time and diastolic hypertension are common and underestimated conditions in newly diagnosed apnoeic patients. J Hypertens. 2005;23:521–7.

Wolf J, Hering D, Narkiewicz K. Non-dipping pattern of hypertension and obstructive sleep apnea syndrome. Hypertens Res. 2010;33:867–71.

Seif F, Patel SR, Walia HK, Rueschman M, Bhatt DL, Blumenthal RS, et al. Obstructive sleep apnea and diurnal nondipping hemodynamic indices in patients at increased cardiovascular risk. J Hypertens. 2014;32:267–75.

Loredo JS, Ancoli-Israel S, Dimsdale JE. Sleep quality and blood pressure dipping in obstructive sleep apnea. Am J Hypertens. 2001;14:887–92.

Hla KM, Young T, Finn L, Peppard PE, Szklo-Coxe M, Stubbs M. Longitudinal association of sleep-disordered breathing and nondipping of nocturnal blood pressure in the Wisconsin sleep chort study. Sleep 2008;31:795–800.

Brown J, Yazdi F, Jodari-Karimi M, Owen JG, Reisin E. Obstructive Sleep Apnea and Hypertension: Updates to a Critical Relationship. Curr Hypertens Rep. 2022;24:173–84.

Bischof F, Egresits J, Schulz R, Randerath WJ, Galetke W, Budweiser S, et al. Effects of continuous positive airway pressure therapy on daytime and nighttime arterial blood pressure in patients with severe obstructive sleep apnea and endothelial dysfunction. Sleep Breath. 2020;24:941–51.

Marrone O, Bonsignore MR. Blood-pressure variability in patients with obstructive sleep apnea: current perspectives. Nat Sci Sleep. 2018;10:229–42.

Cheng YB, Guo QH, Xia JH, Zhang J, Xu TY, Li Y, et al. Obstructive sleep apnea in relation to beat-to-beat, reading-to-reading, and day-to-day blood pressure variability. Hypertens Res. 2024;47:1391–1400.

Kario K. Nocturnal Hypertension: New Technology and Evidence. Hypertension. 2018;71:997–1009.

Sasaki N, Nagai M, Mizuno H, Kuwabara M, Hoshide S, Kario K. Associations Between Characteristics of Obstructive Sleep Apnea and Nocturnal Blood Pressure Surge. Hypertension. 2018;72:1133–40.

Kario K. Management of Hypertension in the Digital Era: Small Wearable Monitoring Devices for Remote Blood Pressure Monitoring. Hypertension 2020;76:640–50.

Hoshide S, Yoshihisa A, Tsuchida F, Mizuno H, Teragawa H, Kasai T, et al. Pulse transit time-estimated blood pressure: a comparison of beat-to-beat and intermittent measurement. Hypertens Res. 2022;45:1001–7.

Bilo G, Pengo MF, Lombardi C, Parati G. Blood pressure variability and obstructive sleep apnea. A question of phenotype? Hypertens Res. 2019;42:27–28.

Shiina K, Tomiyama H, Takata Y, Matsumoto C, Odaira M, Kato K, et al. Obstructive Sleep Apnea as Possible Causal Factor for Visit-to-Visit Blood Pressure Variability. Circ J. 2016;80:1787–94.

Kansui Y, Matsumura K, Morinaga Y, Inoue M, Sakata S, Oishi E, et al. Impact of obstructive sleep apnea on long-term blood pressure variability in Japanese men: a cross-sectional study of a work-site population. Hypertens Res. 2018;41:957–64.

Clark CE, Taylor RS, Shore AC, Ukoumunne OC, Campbell JL. Association of a difference in systolic blood pressure between arms with vascular disease and mortality: a systematic review and meta-analysis. Lancet 2012;379:905–14.

Verberk WJ, Kessels AG, Thien T. Blood pressure measurement method and inter-arm differences: a meta-analysis. Am J Hypertens. 2011;24:1201–8.

Shiina K, Takata Y, Nakano H, Fujii M, Iwasaki Y, Kumai K, et al. Moderate to severe obstructive sleep apnea is independently associated with inter-arm systolic blood pressure difference: Tokyo Sleep Heart Study. J Hypertens. 2022;40:318–26.

Chami HA, Devereux RB, Gottdiener JS, Mehra R, Roman MJ, Benjamin EJ, et al. Left ventricular morphology and systolic function in sleep-disordered breathing: the Sleep Heart Health Study. Circulation 2008;117:2599–607.

Sekizuka H, Osada N, Akashi YJ. Impact of obstructive sleep apnea and hypertension on left ventricular hypertrophy in Japanese patients. Hypertens Res. 2017;40:477–82.

Cabrini ML, Macedo TA, Castro E, de Barros S, Azam I, Pio-Abreu A, et al. Obstructive sleep apnea and hypertension-mediated organ damage in nonresistant and resistant hypertension. Hypertens Res. 2023;46:2033–43.

Usui Y, Takata Y, Inoue Y, Tomiyama H, Kurohane S, Hashimura Y, et al. Severe obstructive sleep apnea impairs left ventricular diastolic function in non-obese men. Sleep Med. 2013;14:1–5.

Cuspidi C, Tadic M, Sala C, Gherbesi E, Grassi G, Mancia G. Obstructive sleep apnoea syndrome and left ventricular hypertrophy: a meta-analysis of echocardiographic studies. J Hypertens. 2020;38:1640–9.

Cuspidi C, Tadic M, Sala C, Gherbesi E, Grassi G, Mancia G. Targeting Concentric Left Ventricular Hypertrophy in Obstructive Sleep Apnea Syndrome. A Meta-analysis of Echocardiographic Studies. Am J Hypertens. 2020;33:310–5.

Yu L, Li H, Liu X, Fan J, Zhu Q, Li J, et al. Left ventricular remodeling and dysfunction in obstructive sleep apnea : Systematic review and meta-analysis. Herz 2020;45:726–38.

Tadic M, Gherbesi E, Faggiano A, Sala C, Carugo S, Cuspidi C. Is myocardial strain an early marker of systolic dysfunction in obstructive sleep apnoea? Findings from a meta-analysis of echocardiographic studies. J Hypertens. 2022;40:1461–8.

Wachter R, Lüthje L, Klemmstein D, Lüers C, Stahrenberg R, Edelmann F, et al. Impact of obstructive sleep apnoea on diastolic function. Eur Respir J. 2013;41:376–83.

Al-Sadawi M, Theodoropoulos K, Saeidifard F, Kiladejo A, Al-Ajam M, Salciccioli L, et al. Sleep Apnea as a Risk Factor for Diastolic Dysfunction: A Systematic Review and Meta-Analysis. Respiration 2022;101:1051–68.

Usui Y, Takata Y, Inoue Y, Shimada K, Tomiyama H, Nishihata Y, et al. Coexistence of obstructive sleep apnoea and metabolic syndrome is independently associated with left ventricular hypertrophy and diastolic dysfunction. Sleep Breath. 2012;16:677–84.

Tanaka N, Tanaka K, Hirao Y, Okada M, Ninomiya Y, Yoshimoto I, et al. Home Sleep Apnea Test to Screen Patients With Atrial Fibrillation for Sleep Apnea Prior to Catheter Ablation. Circ J. 2021;85:252–60.

Linz D, McEvoy RD, Cowie MR, Somers VK, Nattel S, Lévy P, et al. Associations of Obstructive Sleep Apnea With Atrial Fibrillation and Continuous Positive Airway Pressure Treatment: A Review. JAMA Cardiol. 2018;3:532–40.

Shiina K, Takata Y, Takahashi T, Kani J, Nakano H, Takada Y, et al. Nutritional Status and Sleep Quality Are Associated with Atrial Fibrillation in Patients with Obstructive Sleep Apnea: Results from Tokyo Sleep Heart Study. Nutrients 2023;15:3943.

Ignacio de Ulíbarri J, González-Madroño A, de Villar NG, González P, González B, Mancha A, et al. CONUT: a tool for controlling nutritional status. First validation in a hospital population. Nutr Hosp. 2005;20:38–45.

PubMed   Google Scholar  

Ng CY, Liu T, Shehata M, Stevens S, Chugh SS, Wang X. Meta-analysis of obstructive sleep apnea as predictor of atrial fibrillation recurrence after catheter ablation. Am J Cardiol. 2011;108:47–51.

Shukla A, Aizer A, Holmes D, Fowler S, Park DS, Bernstein S, et al. Effect of Obstructive Sleep Apnea Treatment on Atrial Fibrillation Recurrence: A Meta-Analysis. JACC Clin Electrophysiol. 2015;1:41–51.

Gaisl T, Bratton DJ, Kohler M. The impact of obstructive sleep apnoea on the aorta. Eur Respir J. 2015;46:532–44.

Gherbesi E, Tadic M, Faggiano A, Sala C, Carugo S, Cuspidi C. Sleep Apnea Syndrome and Large Artery Subclinical Damage: Targeting Thoracic Aortic Dilatation. Am J Hypertens. 2022;35:543–50.

Tomita Y, Kasai T, Ishiwata S, Daida H, Narui K. Aortic Knob Width as a Novel Indicator of Atherosclerosis and Obstructive Sleep Apnea. J Atheroscler Thromb. 2020;27:501–8.

Shiina K, Tomiyama H, Takata Y, Chikamori T. Aortic Knob Width: A Possible Marker of Vascular Remodeling in Obstructive Sleep Apnea. J Atheroscler Thromb. 2020;27:499–500.

Sampol G, Romero O, Salas A, Tovar JL, Lloberes P, Sagalés T, et al. Obstructive sleep apnea and thoracic aorta dissection. Am J Respir Crit Care Med. 2003;168:1528–31.

Zhou X, Liu F, Zhang W, Wang G, Guo D, Fu W, et al. Obstructive sleep apnea and risk of aortic dissection: A meta-analysis of observational studies. Vascular 2018;26:515–23.

Gaisl T, Rejmer P, Roeder M, Baumgartner P, Sievi NA, Siegfried S, et al. Obstructive sleep apnoea and the progression of thoracic aortic aneurysm: a prospective cohort study. Eur Respir J. 2021;57:2003322.

Mason RH, Ruegg G, Perkins J, Hardinge M, Amann-Vesti B, Senn O, et al. Obstructive sleep apnea in patients with abdominal aortic aneurysms: highly prevalent and associated with aneurysm expansion. Am J Respir Crit Care Med. 2011;183:668–74.

Saruhara H, Takata Y, Usui Y, Shiina K, Hashimura Y, Kato K, et al. Obstructive sleep apnea as a potential risk factor for aortic disease. Heart Vessels. 2012;27:166–73.

Kario K, Hettrick DA, Prejbisz A, Januszewicz A. Obstructive Sleep Apnea-Induced Neurogenic Nocturnal Hypertension: A Potential Role of Renal Denervation? Hypertension 2021;77:1047–60.

Fava C, Dorigoni S, Dalle Vedove F, Danese E, Montagnana M, Guidi GC, et al. Effect of CPAP on blood pressure in patients with OSA/hypopnea a systematic review and meta-analysis. Chest 2014;145:762–71.

Iftikhar IH, Valentine CW, Bittencourt LR, Cohen DL, Fedson AC, Gíslason T, et al. Effects of continuous positive airway pressure on blood pressure in patients with resistant hypertension and obstructive sleep apnea: a meta-analysis. J Hypertens. 2014;32:2341–50.

Schein AS, Kerkhoff AC, Coronel CC, Plentz RD, Sbruzzi G. Continuous positive airway pressure reduces blood pressure in patients with obstructive sleep apnea; a systematic review and meta-analysis with 1000 patients. J Hypertens. 2014;32:1762–73.

Bratton DJ, Gaisl T, Wons AM, Kohler M. CPAP vs Mandibular Advancement Devices and Blood Pressure in Patients With Obstructive Sleep Apnea: A Systematic Review and Meta-analysis. JAMA 2015;314:2280–93.

Liu L, Cao Q, Guo Z, Dai Q. Continuous Positive Airway Pressure in Patients With Obstructive Sleep Apnea and Resistant Hypertension: A Meta-Analysis of Randomized Controlled Trials. J Clin Hypertens (Greenwich). 2016;18:153–8.

Labarca G, Schmidt A, Dreyse J, Jorquera J, Enos D, Torres G, et al. Efficacy of continuous positive airway pressure (CPAP) in patients with obstructive sleep apnea (OSA) and resistant hypertension (RH): Systematic review and meta-analysis. Sleep Med Rev. 2021;58:101446.

Shang W, Zhang Y, Liu L, Chen F, Wang G, Han D. Benefits of continuous positive airway pressure on blood pressure in patients with hypertension and obstructive sleep apnea: a meta-analysis. Hypertens Res. 2022;45:1802–13.

Sun L, Chang YF, Wang YF, Xie QX, Ran XZ, Hu CY, et al. Effect of Continuous Positive Airway Pressure on Blood Pressure in Patients with Resistant Hypertension and Obstructive Sleep Apnea: An Updated Meta-analysis. Curr Hypertens Rep. 2024;26:201–11.

Bazzano LA, Khan Z, Reynolds K, He J. Effect of nocturnal nasal continuous positive airway pressure on blood pressure in obstructive sleep apnea. Hypertension 2007;50:417–23.

Baguet JP, Barone-Rochette G, Pépin JL. Hypertension and obstructive sleep apnoea syndrome: current perspectives. J Hum Hypertens. 2009;23:431–43.

Logan AG, Tkacova R, Perlikowski SM, Leung RS, Tisler A, Floras JS, et al. Refractory hypertension and sleep apnoea: effect of CPAP on blood pressure and baroreflex. Eur Respir J. 2003;21:241–7.

Martínez-García MA, Gómez-Aldaraví R, Soler-Cataluña JJ, Martínez TG, Bernácer-Alpera B, Román-Sánchez P. Positive effect of CPAP treatment on the control of difficult-to-treat hypertension. Eur Respir J. 2007;29:951–7.

Konecny T, Kara T, Somers VK. Obstructive sleep apnea and hypertension: an update. Hypertension 2014;63:203–9.

Montesi SB, Edwards BA, Malhotra A, Bakker JP. The effect of continuous positive airway pressure treatment on blood pressure: a systematic review and meta-analysis of randomized controlled trials. J Clin Sleep Med. 2012;8:587–96.

Martínez-García MA, Capote F, Campos-Rodríguez F, Lloberes P, Díaz de Atauri MJ, Somoza M, et al. Effect of CPAP on blood pressure in patients with obstructive sleep apnea and resistant hypertension: the HIPARCO randomized clinical trial. JAMA 2013;310:2407–15.

McEvoy RD, Antic NA, Heeley E, Luo Y, Ou Q, Zhang X, et al. CPAP for prevention of cardiovascular events in obstructive sleep apnea. N. Engl J Med. 2016;375:919–31.

Oh A, Grivell N, Chai-Coetzer CL. What is a Clinically Meaningful Target for Positive Airway Pressure Adherence? Sleep Med Clin. 2021;16:1–10.

Altintas N, Riha RL. Non-sleepy obstructive sleep apnoea: to treat or not to treat? Eur Respir Rev. 2019;28:190031.

Schwarz EI, Schlatzer C, Rossi VA, Stradling JR, Kohler M. Effect of CPAP Withdrawal on BP in OSA: Data from Three Randomized Controlled Trials. Chest 2016;150:1202–10.

Akashiba T, Minemura H, Yamamoto H, Kosaka N, Saito O, Horie T. Nasal continuous positive airway pressure changes blood pressure “non-dippers” to “dippers” in patients with obstructive sleep apnea. Sleep 1999;22:849–53.

Shiina K, Tomiyama H, Takata Y, Yoshida M, Kato K, Saruhara H, et al. Effects of CPAP therapy on the sympathovagal balance and arterial stiffness in obstructive sleep apnea. Respir Med. 2010;104:911–6.

Kraiczi H, Hedner J, Peker Y, Grote L. Comparison of atenolol, amlodipine, enalapril, hydrochlorothiazide, and losartan for antihypertensive treatment in patients with obstructive sleep apnea. Am J Respir Crit Care Med. 2000;161:1423–8.

Kario K, Kuwabara M, Hoshide S, Nagai M, Shimpo M. Effects of nighttime single-dose administration of vasodilating vs sympatholytic antihypertensive agents on sleep blood pressure in hypertensive patients with sleep apnea syndrome. J Clin Hypertens (Greenwich). 2014;16:459–66.

Pépin JL, Tamisier R, Barone-Rochette G, Launois SH, Lévy P, Baguet JP. Comparison of continuous positive airway pressure and valsartan in hypertensive patients with sleep apnea. Am J Respir Crit Care Med. 2010;182:954–60.

Thunström E, Manhem K, Rosengren A, Peker Y. Blood Pressure Response to Losartan and Continuous Positive Airway Pressure in Hypertension and Obstructive Sleep Apnea. Am J Respir Crit Care Med. 2016;193:310–20.

Yang L, Zhang H, Cai M, Zou Y, Jiang X, Song L, et al. Effect of spironolactone on patients with resistant hypertension and obstructive sleep apnea. Clin Exp Hypertens. 2016;38:464–8.

Kasai T, Bradley TD, Friedman O, Logan AG. Effect of intensified diuretic therapy on overnight rostral fluid shift and obstructive sleep apnoea in patients with uncontrolled hypertension. J Hypertens. 2014;32:673–80.

Revol B, Jullian-Desayes I, Bailly S, Tamisier R, Grillet Y, Sapène M, et al. Who May Benefit From Diuretics in OSA?: A Propensity Score-Match Observational Study. Chest 2020;158:359–64.

Svedmyr S, Hedner J, Bonsignore MR, Lombardi C, Parati G, Ludka O, et al. Hypertension treatment in patients with sleep apnea from the European Sleep Apnea Database (ESADA) cohort - towards precision medicine. J Sleep Res. 2023;32:e13811.

Svedmyr S, Hedner J, Bailly S, Fanfulla F, Hein H, Lombardi C, et al. Blood pressure control in hypertensive sleep apnoea patients of the European Sleep Apnea Database cohort - effects of positive airway pressure and antihypertensive medication. Eur Heart J Open. 2023;3:oead109.

Zinman B, Wanner C, Lachin JM, Fitchett D, Bluhmki E, Hantel S, et al. EMPA-REG OUTCOME investigators: empagliflozin, cardiovascular outcomes, and mortality in type 2 diabetes. N. Engl J Med. 2015;373:2117–28.

Neal B, Perkovic V, Mahaffey KW, de Zeeuw D, Fulcher G, Erondu N, et al. CANVAS program collaborative group: canagliflozin and cardiovascular and renal events in type 2 diabetes. N. Engl J Med. 2017;377:644–57.

Wiviott SD, Raz I, Bonaca MP, Mosenzon O, Kato ET, Cahn A, et al. Dapagliflozin and cardiovascular outcomes in type 2 diabetes. N. Engl J Med. 2019;380:347–57.

Heerspink HJL, Stefánsson BV, Correa-Rotter R, Chertow GM, Greene T, Hou FF, et al. Dapagliflozin in Patients with Chronic Kidney Disease. N. Engl J Med. 2020;383:1436–46.

Herrington WG, Staplin N, Wanner C, Green JB, Hauske SJ, Emberson JR, et al. Empagliflozin in Patients with Chronic Kidney Disease. N. Engl J Med. 2023;388:117–27.

Kario K, Okada K, Kato M, Nishizawa M, Yoshida T, Asano T, et al. 24-Hour blood pressurelowering effect of an SGLT-2 inhibitor in patients with diabetes and uncontrolled nocturnal hypertension: results from the randomized, placebo-controlled SACRA study. Circulation 2018;139:2089–97.

Tsukamoto S, Kobayashi K, Toyoda M, Hatori N, Kanaoka T, Wakui H, et al. Pretreatment body mass index affects achievement of target blood pressure with sodium-glucose cotransporter 2 inhibitors in patients with type 2 diabetes mellitus and chronic kidney disease. Hypertens Res. 2024;47:628–38.

van Ruiten CC, Smits MM, Kok MD, Serné EH, van Raalte DH, Kramer M, et al. Mechanisms underlying the blood pressure lowering effects of dapagliflozin, exenatide, and their combination in people with type 2 diabetes: a secondary analysis of a randomized trial. Cardiovasc Diabetol. 2022;21:63.

Shiina K, Tomiyama H, Tanaka A, Imai T, Hisauchi I, Taguchi I, et al. Canagliflozin independently reduced plasma volume from conventional diuretics in patients with type 2 diabetes and chronic heart failure: a subanalysis of the CANDLE trial. Hypertens Res. 2023;46:495–506.

Wojeck BS, Inzucchi SE, Neeland IJ, Mancuso JP, Frederich R, Masiukiewicz U, et al. Ertugliflozin and incident obstructive sleep apnea: an analysis from the VERTIS CV trial. Sleep Breath. 2023;27:669–72.

Lin R, Yan W, He M, Liu B, Su X, Yi M, et al. The benefits of hypoglycemic therapy for patients with obstructive sleep apnea. Sleep Breath. 2024 https://doi.org/10.1007/s11325-024-03015-2 .

Kario K, Weber M, Ferrannini E. Nocturnal hypertension in diabetes: Potential target of sodium/glucose cotransporter 2 (SGLT2) inhibition. J Clin Hypertens (Greenwich). 2018;20:424–8.

Otsuka Pharmaceutical Co Ltd. Otsuka announces that Novartis Pharma’s ENTRESTO(R) received a new indication for treatment of hypertension in Japan [media release]. Accessed Feb 26, 2024. https://www.otsuka.co.jp/en/company/newsreleases/2021/20210927_2.html .

Williams B, Cockcroft JR, Kario K, Zappe DH, Brunel PC, Wang Q, et al. Effects of sacubitril/valsartan versus olmesartan on central hemodynamics in the elderly with systolic hypertension: the PARAMETER study. Hypertension 2017;69:411–20.

Kario K, Sun N, Chiang FT, Supasyndh O, Baek SH, Inubushi-Molessa A, et al. Efficacy and safety of LCZ696, a first-in-class angiotensin receptor neprilysin inhibitor, in Asian patients with hypertension: a randomized, double-blind, placebo controlled study. Hypertension 2014;63:698–705.

Kario K, Rakugi H, Yarimizu D, Morita Y, Eguchi S, Iekushi K. Twenty-Four-Hour Blood Pressure-Lowering Efficacy of Sacubitril/Valsartan Versus Olmesartan in Japanese Patients With Essential Hypertension Based on Nocturnal Blood Pressure Dipping Status: A Post Hoc Analysis of Data From a Randomized, Double-Blind Multicenter Study. J Am Heart Assoc. 2023;12:e027612.

Kario K, Williams B. Nocturnal Hypertension and Heart Failure: Mechanisms, Evidence, and New Treatments. Hypertension 2021;78:564–77.

Jaffuel D, Nogue E, Berdague P, Galinier M, Fournier P, Dupuis M, et al. Sacubitril-valsartan initiation in chronic heart failure patients impacts sleep apnea: the ENTRESTO-SAS study. ESC Heart Fail. 2021;8:2513–26.

Malhotra A, Grunstein RR, Fietze I, Weaver TE, Redline S, Azarbarzin A, et al. Tirzepatide for the Treatment of Obstructive Sleep Apnea and Obesity. N Engl J Med. 2024 https://doi.org/10.1056/NEJMoa2404881 .

Warchol-Celinska E, Prejbisz A, Kadziela J, Florczak E, Januszewicz M, Michalowska I, et al. Renal Denervation in Resistant Hypertension and Obstructive Sleep Apnea: Randomized Proof-of-Concept Phase II Trial. Hypertension 2018;72:381–90.

Download references

Author information

Authors and affiliations.

Department of Cardiology, Tokyo Medical University, Tokyo, Japan

Kazuki Shiina

You can also search for this author in PubMed   Google Scholar

Corresponding author

Correspondence to Kazuki Shiina .

Ethics declarations

Conflict of interest.

K.S. has received funds from Fukuda Lifetec Ltd.

Additional information

Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ .

Reprints and permissions

About this article

Cite this article.

Shiina, K. Obstructive sleep apnea -related hypertension: a review of the literature and clinical management strategy. Hypertens Res (2024). https://doi.org/10.1038/s41440-024-01852-y

Download citation

Received : 07 March 2024

Revised : 24 July 2024

Accepted : 30 July 2024

Published : 29 August 2024

DOI : https://doi.org/10.1038/s41440-024-01852-y

Share this article

Anyone you share the following link with will be able to read this content:

Sorry, a shareable link is not currently available for this article.

Provided by the Springer Nature SharedIt content-sharing initiative

  • Obstructive sleep apnea
  • Continuous positive airway pressure (CPAP)
  • Hypertension
  • Antihypertensive medication
  • Vascular remodeling.

Quick links

  • Explore articles by subject
  • Guide to authors
  • Editorial policies

literature review on distribution strategy

Information

  • Author Services

Initiatives

You are accessing a machine-readable page. In order to be human-readable, please install an RSS reader.

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess .

Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.

Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers.

Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal.

Original Submission Date Received: .

  • Active Journals
  • Find a Journal
  • Proceedings Series
  • For Authors
  • For Reviewers
  • For Editors
  • For Librarians
  • For Publishers
  • For Societies
  • For Conference Organizers
  • Open Access Policy
  • Institutional Open Access Program
  • Special Issues Guidelines
  • Editorial Process
  • Research and Publication Ethics
  • Article Processing Charges
  • Testimonials
  • Preprints.org
  • SciProfiles
  • Encyclopedia

children-logo

Article Menu

literature review on distribution strategy

  • Subscribe SciFeed
  • Recommended Articles
  • Google Scholar
  • on Google Scholar
  • Table of Contents

Find support for a specific problem in the support section of our website.

Please let us know what you think of our products and services.

Visit our dedicated information section to learn more about MDPI.

JSmol Viewer

Gastrointestinal stromal tumors (gists) in pediatric patients: a case report and literature review.

literature review on distribution strategy

1. Introduction

2. epidemiology, 3. diagnostics, 3.1. clinical features, 3.2. pathology, 3.3. genetics and genotyping, 3.3.1. succinate dehydrogenase-deficient gists (dsdh), 3.3.2. braf and ras mutations, 3.4. imaging, 3.4.1. computed tomography, 3.4.2. magnetic resonance imaging, 3.4.3. contrast-enhanced and endoscopic contrast-enhance ultrasound, 3.5. endoscopy, 3.6. biopsy, 4. associations with other pathological entities, 4.1. carney triad and carney syndrome, 4.2. neurofibromatosis type i, 5. risk stratification, 6. treatment, 6.1. medical treatment, 6.2. surgical treatment, minimally invasive techniques, 7. follow-up and survival, 8. case report, case discussion, 9. conclusions, author contributions, institutional review board statement, informed consent statement, data availability statement, conflicts of interest.

  • Miettinen, M.; Lasota, J. Gastrointestinal stromal tumors: Review on morphology, molecular pathology, prognosis, and differential diagnosis. Arch. Pathol. Lab. Med. 2006 , 130 , 1466–1478. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Dudzisz-śledź, M.; Klimczak, A.; Bylina, E.; Rutkowski, P. Treatment of Gastrointestinal Stromal Tumors (GISTs): A Focus on Younger Patients. Cancers 2022 , 14 , 2831. [ Google Scholar ] [ CrossRef ]
  • Min, K.W.; Leabu, M. Interstitial cells of Cajal (ICC) and gastrointestinal stromal tumor (GIST): Facts, speculations, and myths. J. Cell. Mol. Med. 2006 , 10 , 995–1013. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Miettinen, M.; Wang, Z.F.; Sarlomo-Rikala, M.; Osuch, C.; Rutkowski, P.; Lasota, J. Succinate dehydrogenase-deficient GISTs: A clinicopathologic, immunohistochemical, and molecular genetic study of 66 gastric GISTs with predilection to young age. Am. J. Surg. Pathol. 2011 , 35 , 1712–1721. [ Google Scholar ] [ CrossRef ]
  • Serrano, C.; Martín-Broto, J.; Asencio-Pascual, J.M. 2023 GEIS Guidelines for gastrointestinal stromal tumors. Ther. Adv. Med. Oncol. 2023 , 15 , 17588359231192388. [ Google Scholar ] [ CrossRef ]
  • Andrzejewska, M.; Czarny, J.; Derwich, K. Latest Advances in the Management of Pediatric Gastrointestinal Stromal Tumors. Cancers 2022 , 14 , 4989. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • DeMatteo, R.P.; Lewis, J.J.; Leung, D.; Mudan, S.S.; Woodruff, J.M.; Brennan, M.F. Two hundred gastrointestinal stromal tumors: Recurrence patterns and prognostic factors for survival. Ann. Surg. 2000 , 231 , 51–58. [ Google Scholar ] [ CrossRef ]
  • Quiroz, H.J.; Willobee, B.A.; Sussman, M.S.; Fox, B.R.; Thorson, C.M.; Sola, J.E.; Perez, E.A. Pediatric gastrointestinal stromal tumors—A review of diagnostic modalities. Transl. Gastroenterol. Hepatol. 2018 , 3 , 54. [ Google Scholar ] [ CrossRef ]
  • Raitio, A.; Salim, A.; Mullassery, D.; Losty, P.D. Current treatment and outcomes of pediatric gastrointestinal stromal tumors (GIST): A systematic review of published studies. Pediatr. Surg. Int. 2021 , 37 , 1161–1165. [ Google Scholar ] [ CrossRef ]
  • Theiss, L.; Contreras, C.M. Gastrointestinal Stromal Tumors of the Stomach and Esophagus. Surg. Clin. N. Am. 2019 , 99 , 543–553. [ Google Scholar ] [ CrossRef ]
  • Kaemmer, D.A.; Otto, J.; Lassay, L.; Steinau, G.; Klink, C.; Junge, K.; Klinge, U.; Schumpelick, V. The gist of literature on pediatric GIST: Review of clinical presentation. J. Pediatr. Hematol. Oncol. 2009 , 31 , 108–112. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Rink, L.; Godwin, A.K. Clinical and molecular characteristics of gastrointestinal stromal tumors in the pediatric and young adult population. Curr. Oncol. Rep. 2009 , 11 , 314–321. [ Google Scholar ] [ CrossRef ]
  • Tran, S.; Dingeldein, M.; Mengshol, S.C.; Kay, S.; Chin, A.C. Incidental GIST after appendectomy in a pediatric patient: A first instance and review of pediatric patients with CD117 confirmed GISTs. Pediatr. Surg. Int. 2014 , 30 , 457–466. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Jing, X.; Meng, X.; Gao, Y.; Yu, J.; Liu, B. A 4-month-old boy with gastrointestinal stromal tumor of mesocolon. Cancer Biol. Ther. 2019 , 20 , 8–14. [ Google Scholar ] [ CrossRef ]
  • Hashizume, N.; Sakamoto, S.; Fukahori, S.; Ishii, S.; Saikusa, N.; Koga, Y.; Higashidate, N.; Tsuruhisa, S.; Nakahara, H.; Tanaka, Y.; et al. Gastrointestinal stromal tumor in perforated Meckel’s diverticulum: A case report and literature review. Surg. Case Rep. 2020 , 6 , 265. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Khan, J.; Ullah, A.; Waheed, A.; Karki, N.R.; Adhikari, N.; Vemavarapu, L.; Belakhlef, S.; Bendjemil, S.M.; Mehdizadeh Seraj, S.; Sidhwa, F.; et al. Gastrointestinal Stromal Tumors (GIST): A Population-Based Study Using the SEER Database, including Management and Recent Advances in Targeted Therapy. Cancers 2022 , 14 , 3689. [ Google Scholar ] [ CrossRef ]
  • Gold, J.S.; van der Zwan, S.M.; Gönen, M.; Maki, R.G.; Singer, S.; Brennan, M.F.; Antonescu, C.R.; De Matteo, R.P. Outcome of metastatic GIST in the era before tyrosine kinase inhibitors. Ann. Surg. Oncol. 2007 , 14 , 134–142. [ Google Scholar ] [ CrossRef ]
  • Agaram, N.P.; Laquaglia, M.P.; Ustun, B.; Guo, T.; Wong, G.C.; Socci, N.D.; Maki, R.G.; DeMatteo, R.P.; Besmer, P.; Antonescu, C.R. Molecular characterization of pediatric gastrointestinal stromal tumors. Clin. Cancer Res. Off. J. Am. Assoc. Cancer Res. 2008 , 14 , 3204–3215. [ Google Scholar ] [ CrossRef ]
  • Janeway, K.A.; Pappo, A. Treatment guidelines for gastrointestinal stromal tumors in children and young adults. J. Pediatr. Hematol. Oncol. 2012 , 34 (Suppl. S2), S69–S72. [ Google Scholar ] [ CrossRef ]
  • Zhao, X.; Yue, C. Gastrointestinal stromal tumor. J. Gastrointest. Oncol. 2012 , 3 , 189–208. [ Google Scholar ] [ CrossRef ]
  • Nishida, T.; Blay, J.Y.; Hirota, S.; Kitagawa, Y.; Kang, Y.K. The standard diagnosis, treatment, and follow-up of gastrointestinal stromal tumors based on guidelines. Gastric Cancer 2016 , 19 , 3–14. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Ruiz-Demoulin, S.; Trenquier, E.; Dekkar, S.; Deshayes, S.; Boisguérin, P.; Serrano, C.; de Santa Barbara, P.; Faure, S. LIX1 Controls MAPK Signaling Reactivation and Contributes to GIST-T1 Cell Resistance to Imatinib. Int. J. Mol. Sci. 2023 , 24 , 7138. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Javidi-Sharifi, N.; Traer, E.; Martinez, J.; Gupta, A.; Taguchi, T.; Dunlap, J.; Heinrich, M.C.; Corless, C.L.; Rubin, B.P.; Druker, B.J.; et al. Crosstalk between KIT and FGFR3 promotes gastrointestinal stromal tumor cell growth and drug resistance. Cancer Res. 2015 , 75 , 880–891. [ Google Scholar ] [ CrossRef ]
  • Daniels, M.; Lurkin, I.; Pauli, R.; Erbstösser, E.; Hildebrandt, U.; Hellwig, K.; Zschille, U.; Lüders, P.; Krüger, G.; Knolle, J.; et al. Spectrum of KIT/PDGFRA/BRAF mutations and Phosphatidylinositol-3-Kinase pathway gene alterations in gastrointestinal stromal tumors (GIST). Cancer Lett. 2011 , 312 , 43–54. [ Google Scholar ] [ CrossRef ]
  • Boikos, S.A.; Pappo, A.S.; Killian, J.K.; LaQuaglia, M.P.; Weldon, C.B.; George, S.; Trent, J.C.; von Mehren, M.; Wright, J.A.; Schiffman, J.D.; et al. Molecular Subtypes of KIT/PDGFRA Wild-Type Gastrointestinal Stromal Tumors: A Report From the National Institutes of Health Gastrointestinal Stromal Tumor Clinic. JAMA Oncol. 2016 , 2 , 922–928. [ Google Scholar ] [ CrossRef ]
  • Urbini, M.; Astolfi, A.; Indio, V.; Nannini, M.; Schipani, A.; Bacalini, M.G.; Angelini, S.; Ravegnini, G.; Calice, G.; Del Gaudio, M.; et al. Gene duplication, rather than epigenetic changes, drives FGF4 overexpression in KIT/PDGFRA/SDH/RAS-P WT GIST. Sci. Rep. 2020 , 10 , 19829. [ Google Scholar ] [ CrossRef ]
  • Steeghs, E.M.P.; Kroeze, L.I.; Tops, B.B.J.; van Kempen, L.C.; Ter Elst, A.; Kastner-van Raaij, A.W.M.; Hendriks-Cornelissen, S.J.B.; Hermsen, M.J.W.; Jansen, E.A.M.; Nederlof, P.M.; et al. Comprehensive routine diagnostic screening to identify predictive mutations, gene amplifications, and microsatellite instability in FFPE tumor material. BMC Cancer 2020 , 20 , 291. [ Google Scholar ] [ CrossRef ]
  • Atiq, M.A.; Davis, J.L.; Hornick, J.L.; Dickson, B.C.; Fletcher, C.D.M.; Fletcher, J.A.; Folpe, A.L.; Mariño-Enríquez, A. Mesenchymal tumors of the gastrointestinal tract with NTRK rearrangements: A clinicopathological, immunophenotypic, and molecular study of eight cases, emphasizing their distinction from gastrointestinal stromal tumor (GIST). Mod. Pathol. Off. J. United States Can. Acad. Pathol. Inc. 2021 , 34 , 95–103. [ Google Scholar ] [ CrossRef ]
  • Huss, S.; Pasternack, H.; Ihle, M.A.; Merkelbach-Bruse, S.; Heitkötter, B.; Hartmann, W.; Trautmann, M.; Gevensleben, H.; Büttner, R.; Schildhaus, H.-U.; et al. Clinicopathological and molecular features of a large cohort of gastrointestinal stromal tumors (GISTs) and review of the literature: BRAF mutations in KIT/PDGFRA wild-type GISTs are rare events. Hum. Pathol. 2017 , 62 , 206–214. [ Google Scholar ] [ CrossRef ]
  • Janeway, K.A.; Kim, S.Y.; Lodish, M.; Nosé, V.; Rustin, P.; Gaal, J.; Dahia, P.L.M.; Liegl, B.; Ball, E.R.; Raygada, M.; et al. Defects in succinate dehydrogenase in gastrointestinal stromal tumors lacking KIT and PDGFRA mutations. Proc. Natl. Acad. Sci. USA 2011 , 108 , 314–318. [ Google Scholar ] [ CrossRef ]
  • Ibrahim, A.; Chopra, S. Succinate Dehydrogenase-Deficient Gastrointestinal Stromal Tumors. Arch. Pathol. Lab. Med. 2020 , 144 , 655–660. [ Google Scholar ] [ CrossRef ]
  • Giger, O.T.; Ten Hoopen, R.; Shorthouse, D.; Abdullahi, S.; Bulusu, V.R.; Jadhav, S.; Maher, E.R.; Casey, R.T. Preferential MGMT hypermethylation in SDH-deficient wild-type GIST. J. Clin. Pathol. 2023 , 77 , 34–39. [ Google Scholar ] [ CrossRef ]
  • Cairncross, J.G.; Wang, M.; Jenkins, R.B.; Shaw, E.G.; Giannini, C.; Brachman, D.G.; Buckner, J.C.; Fink, K.L.; Souhami, L.; Laperriere, N.J.; et al. Benefit from procarbazine, lomustine, and vincristine in oligodendroglial tumors is associated with mutation of IDH. J. Clin. Oncol. Off. J. Am. Soc. Clin. Oncol. 2014 , 32 , 783–790. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Kansanen, E.; Kuosmanen, S.M.; Leinonen, H.; Levonen, A.-L. The Keap1-Nrf2 pathway: Mechanisms of activation and dysregulation in cancer. Redox Biol. 2013 , 1 , 45–49. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Gayther, S.A.; Batley, S.J.; Linger, L.; Bannister, A.; Thorpe, K.; Chin, S.-F.; Daigo, Y.; Russell, P.; Wilson, A.; Sowter, H.M.; et al. Mutations truncating the EP300 acetylase in human cancers. Nat. Genet. 2000 , 24 , 300–303. [ Google Scholar ] [ CrossRef ]
  • Zhao, Y.; Feng, F.; Guo, Q.H.; Wang, Y.P.; Zhao, R. Role of succinate dehydrogenase deficiency and oncometabolites in gastrointestinal stromal tumors. World J. Gastroenterol. 2020 , 26 , 5074–5089. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Chen, W.-T.; Huang, C.-J.; Wu, M.-T.; Yang, S.-F.; Su, Y.-C.; Chai, C.-Y. Hypoxia-inducible factor-1alpha is associated with risk of aggressive behavior and tumor angiogenesis in gastrointestinal stromal tumor. Jpn. J. Clin. Oncol. 2005 , 35 , 207–213. [ Google Scholar ] [ CrossRef ]
  • Bai, C.; Liu, X.; Qiu, C.; Zheng, J. FoxM1 is regulated by both HIF-1α and HIF-2α and contributes to gastrointestinal stromal tumor progression. Gastric Cancer 2019 , 22 , 91–103. [ Google Scholar ] [ CrossRef ]
  • Kalfusova, A.; Linke, Z.; Kalinova, M.; Krskova, L.; Hilska, I.; Szabova, J.; Vicha, A.; Kodet, R. Gastrointestinal stromal tumors—Summary of mutational status of the primary/secondary KIT/PDGFRA mutations, BRAF mutations and SDH defects. Pathol. Res. Pract. 2019 , 215 , 152708. [ Google Scholar ] [ CrossRef ]
  • Jašek, K.; Váňová, B.; Grendár, M.; Štanclová, A.; Szépe, P.; Hornáková, A.; Holubeková, V.; Plank, L.; Lasabová, Z. BRAF mutations in KIT/PDGFRA positive gastrointestinal stromal tumours (GISTs): Is their frequency underestimated? Pathol. Res. Pract. 2020 , 216 , 153171. [ Google Scholar ] [ CrossRef ]
  • Niinuma, T.; Suzuki, H.; Sugai, T. Molecular characterization and pathogenesis of gastrointestinal stromal tumor. Transl. Gastroenterol. Hepatol. 2018 , 3 , 1–15. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Scheffzek, K.; Ahmadian, M.R.; Kabsch, W.; Wiesmüller, L.; Lautwein, A.; Schmitz, F.; Wittinghofer, A. The Ras-RasGAP complex: Structural basis for GTPase activation and its loss in oncogenic Ras mutants. Science 1997 , 277 , 333–338. [ Google Scholar ] [ CrossRef ]
  • Simanshu, D.K.; Nissley, D.V.; McCormick, F. RAS Proteins and Their Regulators in Human Disease. Cell 2017 , 170 , 17–33. [ Google Scholar ] [ CrossRef ]
  • Nishida, T.; Naito, Y.; Takahashi, T.; Saito, T.; Hisamori, S.; Manaka, D.; Ogawa, K.; Hirota, S.; Ichikawa, H. Molecular and clinicopathological features of KIT/PDGFRA wild-type gastrointestinal stromal tumors. Cancer Sci. 2024 , 115 , 894–904. [ Google Scholar ] [ CrossRef ]
  • Franck, C.; Rosania, R.; Franke, S.; Haybaeck, J.; Canbay, A.; Venerito, M. The BRAF Status May Predict Response to Sorafenib in Gastrointestinal Stromal Tumors Resistant to Imatinib, Sunitinib, and Regorafenib: Case Series and Review of the Literature. Digestion 2019 , 99 , 179–184. [ Google Scholar ] [ CrossRef ]
  • Agaimy, A.; Terracciano, L.M.; Dirnhofer, S.; Tornillo, L.; Foerster, A.; Hartmann, A.; Bihl, M.P. V600E BRAF mutations are alternative early molecular events in a subset of KIT/PDGFRA wild-type gastrointestinal stromal tumours. J. Clin. Pathol. 2009 , 62 , 613–616. [ Google Scholar ] [ CrossRef ]
  • Kalkmann, J.; Zeile, M.; Antoch, G.; Berger, F.; Diederich, S.; Dinter, D.; Fink, C.; Janka, R.; Stattaus, J. Consensus report on the radiological management of patients with gastrointestinal stromal tumours (GIST): Recommendations of the German GIST Imaging Working Group. Cancer Imaging 2012 , 12 , 126–135. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Bano, S.; Puri, S.K.; Upreti, L.; Chaudhary, V.; Sant, H.K.; Gondal, R. Gastrointestinal stromal tumors (GISTs): An imaging perspective. Jpn. J. Radiol. 2012 , 30 , 105–115. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Tsurumaru, D.; Nishimuta, Y.; Kai, S.; Oki, E.; Minoda, Y.; Ishigami, K. Clinical significance of dual-energy dual-layer CT parameters in differentiating small-sized gastrointestinal stromal tumors from leiomyomas. Jpn. J. Radiol. 2023 , 41 , 1389–1396. [ Google Scholar ] [ CrossRef ]
  • Janeway, K.A.; Albritton, K.H.; Van Den Abbeele, A.D.; D’Amato, G.Z.; Pedrazzoli, P.; Siena, S.; Picus, J.; Butrynski, J.E.; Schlemmer, M.; Heinrich, M.C.; et al. Sunitinib treatment in pediatric patients with advanced GIST following failure of imatinib. Pediatr. Blood Cancer 2009 , 52 , 767–771. [ Google Scholar ] [ CrossRef ]
  • Wu, C.; Zhang, X.; Zeng, Y.; Wu, R.; Ding, L.; Xia, Y.; Chen, Z.; Zhang, X.; Wang, X. [ 18 F]FAPI-42 PET/CT versus [ 18107 F]FDG PET/CT for imaging of recurrent or metastatic gastrointestinal stromal tumors. Eur. J. Nucl. Med. Mol. Imaging 2022 , 50 , 194–204. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Herzberg, M.; Beer, M.; Anupindi, S.; Vollert, K.; Kröncke, T. Imaging pediatric gastrointestinal stromal tumor (GIST). J. Pediatr. Surg. 2018 , 53 , 1862–1870. [ Google Scholar ] [ CrossRef ]
  • Yang, L.; Zhang, D.; Zheng, T.; Liu, D.; Fang, Y. Predicting the progression-free survival of gastrointestinal stromal tumors after imatinib therapy through multi-sequence magnetic resonance imaging. Abdom. Radiol. 2024 , 49 , 801–813. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Yu, M.H.; Lee, J.M.; Baek, J.H.; Han, J.K.; Choi, B.-I. MRI features of gastrointestinal stromal tumors. AJR Am. J. Roentgenol. 2014 , 203 , 980–991. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Charles-Edwards, E.M.; De Souza, N.M. Diffusion-weighted magnetic resonance imaging and its application to cancer. Cancer Imaging 2006 , 6 , 135–143. [ Google Scholar ] [ CrossRef ]
  • Dietrich, C.; Hartung, E.; Ignee, A. The use of contrast-enhanced ultrasound in patients with GIST metastases that are negative in CT and PET. Ultraschall Med. 2008 , 29 (Suppl. S5), 276–277. [ Google Scholar ] [ CrossRef ]
  • Ignee, A.; Jenssen, C.; Hocke, M.; Dong, Y.; Wang, W.-P.; Cui, X.-W.; Woenckhaus, M.; Iordache, S.; Saftoiu, A.; Schuessler, G.; et al. Contrast-enhanced (endoscopic) ultrasound and endoscopic ultrasound elastography in gastrointestinal stromal tumors. Endosc. Ultrasound 2017 , 6 , 55–60. [ Google Scholar ] [ CrossRef ]
  • Okasha, H.H.; Naguib, M.; El Nady, M.; Ezzat, R.; Al-Gemeie, E.; Al-Nabawy, W.; Aref, W.; Abdel-Moaty, A.; Essam, K.; Hamdy, A. Role of endoscopic ultrasound and endoscopic-ultrasound-guided fine-needle aspiration in endoscopic biopsy negative gastrointestinal lesions. Endosc. Ultrasound 2017 , 6 , 156–161. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Chhoda, A.; Jain, D.; Surabhi, V.R.; Singhal, S. Contrast enhanced harmonic endoscopic ultrasound: A novel approach for diagnosis and management of gastrointestinal stromal tumors. Clin. Endosc. 2018 , 51 , 215–221. [ Google Scholar ] [ CrossRef ]
  • Wu, J.; Zhuang, M.; Zhou, Y.; Zhan, X.; Xie, W. The value of contrast-enhanced harmonic endoscopic ultrasound in differential diagnosis and evaluation of malignant risk of gastrointestinal stromal tumors (<50 mm). Scand. J. Gastroenterol. 2023 , 58 , 542–548. [ Google Scholar ] [ CrossRef ]
  • Facciorusso, A.; Crinò, S.F.; Ramai, D.; Ofosu, A.; Muscatiello, N.; Mangiavillano, B.; Lamonaca, L.; Lisotti, A.; Fusaroli, P.; Gkolfakis, P.; et al. Comparison between endoscopic ultrasound-guided fine-needle biopsy and bite-on-bite jumbo biopsy for sampling of subepithelial lesions. Dig. liver Dis. Off. J. Ital. Soc. Gastroenterol. Ital. Assoc. Study Liver 2022 , 54 , 676–683. [ Google Scholar ] [ CrossRef ]
  • Jacobson, B.C.; Bhatt, A.; Greer, K.B.; Lee, L.S.; Park, W.G.; Sauer, B.G.; Shami, V.M. ACG Clinical Guideline: Diagnosis and Management of Gastrointestinal Subepithelial Lesions. Am. J. Gastroenterol. 2023 , 118 , 46–58. [ Google Scholar ] [ CrossRef ]
  • Jakob, J.; Salameh, R.; Wichmann, D.; Charalambous, N.; Zygmunt, A.C.; Kreisel, I.; Heinz, J.; Ghadimi, M.; Ronellenfitsch, U. Needle tract seeding and abdominal recurrence following pre-treatment biopsy of gastrointestinal stromal tumors (GIST): Results of a systematic review. BMC Surg. 2022 , 22 , 202. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Hwang, J.H.; Rulyak, S.D.; Kimmey, M.B. American Gastroenterological Association Institute Technical Review on the Management of Gastric Subepithelial Masses. Gastroenterology 2006 , 130 , 2217–2228. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Haller, F.; Moskalev, E.A.; Faucz, F.R.; Barthelmeß, S.; Wiemann, S.; Bieg, M.; Assie, G.; Bertherat, J.; Schaefer, I.M.; Otto, C.; et al. Aberrant DNA hypermethylation of SDHC: A novel mechanism of tumor development in Carney triad. Endocr. Relat. Cancer 2014 , 21 , 567–577. [ Google Scholar ] [ CrossRef ]
  • Pitsava, G.; Settas, N.; Faucz, F.R.; Stratakis, C.A. Carney Triad, Carney-Stratakis Syndrome, 3PAS and Other Tumors Due to SDH Deficiency. Front. Endocrinol. 2021 , 12 , 680609. [ Google Scholar ] [ CrossRef ]
  • Killian, J.K.; Miettinen, M.; Walker, R.L.; Wang, Y.; Zhu, Y.J.; Waterfall, J.J.; Noyes, N.; Retnakumar, P.; Yang, Z.; Smith, W.I.J.; et al. Recurrent epimutation of SDHC in gastrointestinal stromal tumors. Sci. Transl. Med. 2014 , 6 , 268ra177. [ Google Scholar ] [ CrossRef ]
  • Matyakhina, L.; Bei, T.A.; McWhinney, S.R.; Pasini, B.; Cameron, S.; Gunawan, B.; Stergiopoulos, S.G.; Boikos, S.; Muchow, M.; Dutra, A.; et al. Genetics of carney triad: Recurrent losses at chromosome 1 but lack of germline mutations in genes associated with paragangliomas and gastrointestinal stromal tumors. J. Clin. Endocrinol. Metab. 2007 , 92 , 2938–2943. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Carney, J.A.; Stratakis, C.A. Familial paraganglioma and gastric stromal sarcoma: A new syndrome distinct from the Carney triad. Am. J. Med. Genet. 2002 , 108 , 132–139. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Yao, M.-Q.; Jiang, Y.-P.; Yi, B.-H.; Yang, Y.; Sun, D.-Z.; Fan, J.-X. Neurofibromatosis type 1 with multiple gastrointestinal stromal tumors: A case report. World J. Clin. Cases 2023 , 11 , 2336–2342. [ Google Scholar ] [ CrossRef ]
  • Takazawa, Y.; Sakurai, S.; Sakuma, Y.; Ikeda, T.; Yamaguchi, J.; Hashizume, Y.; Yokoyama, S.; Motegi, A.; Fukayama, M. Gastrointestinal stromal tumors of neurofibromatosis type I (von Recklinghausen’s disease). Am. J. Surg. Pathol. 2005 , 29 , 755–763. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Gasparotto, D.; Rossi, S.; Polano, M.; Tamborini, E.; Lorenzetto, E.; Sbaraglia, M.; Mondello, A.; Massani, M.; Lamon, S.; Bracci, R.; et al. Quadruple-negative GIST is a sentinel for unrecognized neurofibromatosis type 1 syndrome. Clin. Cancer Res. 2017 , 23 , 273–282. [ Google Scholar ] [ CrossRef ]
  • Hudgi, A.R.; Azam, M.; Masood, M.; Arshad, H.M.S.; Yap, J.E.L. The Gastrointestinal Stromal Tumors of It: A Rare Presentation of Neurofibromatosis Type I. Cureus 2021 , 13 , e16034. [ Google Scholar ] [ CrossRef ]
  • Joensuu, H.; Vehtari, A.; Riihimäki, J.; Nishida, T.; Steigen, S.E.; Brabec, P.; Plank, L.; Nilsson, B.; Cirilli, C.; Braconi, C.; et al. Risk of recurrence of gastrointestinal stromal tumour after surgery: An analysis of pooled population-based cohorts. Lancet. Oncol. 2012 , 13 , 265–274. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Fletcher, C.D.M.; Berman, J.J.; Corless, C.; Gorstein, F.; Lasota, J.; Longley, B.J.; Miettinen, M.; O’Leary, T.J.; Remotti, H.; Rubin, B.P.; et al. Diagnosis of gastrointestinal stromal tumors: A consensus approach. Hum. Pathol. 2002 , 33 , 459–465. [ Google Scholar ] [ CrossRef ]
  • Gold, J.S.; Gönen, M.; Gutiérrez, A.; Broto, J.M.; García-del-Muro, X.; Smyrk, T.C.; Maki, R.G.; Singer, S.; Brennan, M.F.; Antonescu, C.R.; et al. Development and validation of a prognostic nomogram for recurrence-free survival after complete surgical resection of localised primary gastrointestinal stromal tumour: A retrospective analysis. Lancet Oncol. 2009 , 10 , 1045–1052. [ Google Scholar ] [ CrossRef ]
  • Joensuu, H. Risk stratification of patients diagnosed with gastrointestinal stromal tumor. Hum. Pathol. 2008 , 39 , 1411–1419. [ Google Scholar ] [ CrossRef ]
  • Hemming, M.L.; Coy, S.; Lin, J.-R.; Andersen, J.L.; Przybyl, J.; Mazzola, E.; Abdelhamid Ahmed, A.H.; van de Rijn, M.; Sorger, P.K.; Armstrong, S.A.; et al. HAND1 and BARX1 Act as Transcriptional and Anatomic Determinants of Malignancy in Gastrointestinal Stromal Tumor. Clin. Cancer Res. Off. J. Am. Assoc. Cancer Res. 2021 , 27 , 1706–1719. [ Google Scholar ] [ CrossRef ]
  • Liegl, B.; Kepten, I.; Le, C.; Zhu, M.; Demetri, G.D.; Heinrich, M.C.; Fletcher, C.D.M.; Corless, C.L.; Fletcher, J.A. Heterogeneity of kinase inhibitor resistance mechanisms in GIST. J. Pathol. 2008 , 216 , 64–74. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Schlemmer, M.; Bauer, S.; Schütte, R.; Hartmann, J.T.; Bokemeyer, C.; Hosius, C.; Reichardt, P. Activity and side effects of imatinib in patients with gastrointestinal stromal tumors: Data from a German multicenter trial. Eur. J. Med. Res. 2011 , 16 , 206–212. [ Google Scholar ] [ CrossRef ]
  • Astolfi, A.; Pantaleo, M.A.; Indio, V.; Urbini, M.; Nannini, M. The emerging role of the FGF/FGFR pathway in gastrointestinal stromal tumor. Int. J. Mol. Sci. 2020 , 21 , 3313. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Mei, L.; Smith, S.C.; Faber, A.C.; Trent, J.; Grossman, S.R.; Stratakis, C.A.; Boikos, S.A. Gastrointestinal Stromal Tumors: The GIST of Precision Medicine. Trends Cancer 2018 , 4 , 74–91. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Glod, J.; Arnaldez, F.I.; Wiener, L.; Spencer, M.; Killian, J.K.; Meltzer, P.; Dombi, E.; Derse-Anthony, C.; Derdak, J.; Srinivasan, R.; et al. A Phase II Trial of Vandetanib in Children and Adults with Succinate Dehydrogenase-Deficient Gastrointestinal Stromal Tumor. Clin. Cancer Res. 2019 , 25 , 6302–6308. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Rusakiewicz, S.; Perier, A.; Semeraro, M.; Pitt, J.M.; von Strandmann, E.P.; Reiners, K.S.; Aspeslagh, S.; Pipéroglou, C.; Vély, F.; Ivagnes, A.; et al. NKp30 isoforms and NKp30 ligands are predictive biomarkers of response to imatinib mesylate in metastatic GIST patients. Oncoimmunology 2017 , 6 , e1137418. [ Google Scholar ] [ CrossRef ]
  • Casali, P.G.; Blay, J.Y.; Abecassis, N.; Bajpai, J.; Bauer, S.; Biagini, R.; Bielack, S.; Bonvalot, S.; Boukovinas, I.; Bovee, J.V.M.G.; et al. Gastrointestinal stromal tumours: ESMO–EURACAN–GENTURIS Clinical Practice Guidelines for diagnosis, treatment and follow-up ☆. Ann. Oncol. 2022 , 33 , 20–33. [ Google Scholar ] [ CrossRef ]
  • Reichardt, P. The Story of Imatinib in GIST—A Journey through the Development of a Targeted Therapy. Oncol. Res. Treat. 2018 , 41 , 472–477. [ Google Scholar ] [ CrossRef ]
  • Trent, J.C.; Subramanian, M.P. Managing GIST in the imatinib era: Optimization of adjuvant therapy. Expert Rev. Anticancer Ther. 2014 , 14 , 1445–1459. [ Google Scholar ] [ CrossRef ]
  • Rihacek, M.; Selingerova, I.; Kocak, I.; Kocakova, I.; Rihackova, E.; Valik, D.; Sterba, J. Sunitinib-Induced Elevation of Mean Corpuscular Volume (MCV)—Exploring Its Possible Clinical Relevance in Cancer Patients. Curr. Oncol. 2022 , 29 , 4138–4147. [ Google Scholar ] [ CrossRef ]
  • Prior, J.O.; Montemurro, M.; Orcurto, M.-V.; Michielin, O.; Luthi, F.; Benhattar, J.; Guillou, L.; Elsig, V.; Stupp, R.; Delaloye, A.B.; et al. Early prediction of response to sunitinib after imatinib failure by 18F-fluorodeoxyglucose positron emission tomography in patients with gastrointestinal stromal tumor. J. Clin. Oncol. Off. J. Am. Soc. Clin. Oncol. 2009 , 27 , 439–445. [ Google Scholar ] [ CrossRef ]
  • Verschuur, A.C.; Bajčiová, V.; Mascarenhas, L.; Khosravan, R.; Lin, X.; Ingrosso, A.; Janeway, K.A. Sunitinib in pediatric patients with advanced gastrointestinal stromal tumor: Results from a phase I/II trial. Cancer Chemother. Pharmacol. 2019 , 84 , 41–50. [ Google Scholar ] [ CrossRef ]
  • Ben-Ami, E.; Barysauskas, C.M.; von Mehren, M.; Heinrich, M.C.; Corless, C.L.; Butrynski, J.E.; Morgan, J.A.; Wagner, A.J.; Choy, E.; Yap, J.T.; et al. Long-term follow-up results of the multicenter phase II trial of regorafenib in patients with metastatic and/or unresectable GI stromal tumor after failure of standard tyrosine kinase inhibitor therapy. Ann. Oncol. Off. J. Eur. Soc. Med. Oncol. 2016 , 27 , 1794–1799. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Demetri, G.D.; Reichardt, P.; Kang, Y.-K.; Blay, J.-Y.; Rutkowski, P.; Gelderblom, H.; Hohenberger, P.; Leahy, M.; von Mehren, M.; Joensuu, H.; et al. Efficacy and safety of regorafenib for advanced gastrointestinal stromal tumours after failure of imatinib and sunitinib (GRID): An international, multicentre, randomised, placebo-controlled, phase 3 trial. Lancet 2013 , 381 , 295–302. [ Google Scholar ] [ CrossRef ]
  • Daudigeos-Dubus, E.; Le Dret, L.; Lanvers-Kaminsky, C.; Bawa, O.; Opolon, P.; Vievard, A.; Villa, I.; Pagès, M.; Bosq, J.; Vassal, G.; et al. Regorafenib: Antitumor Activity upon Mono and Combination Therapy in Preclinical Pediatric Malignancy Models. PLoS ONE 2015 , 10 , e0142612. [ Google Scholar ] [ CrossRef ]
  • Brinch, C.; Dehnfeld, M.; Hogdall, E.; Poulsen, T.S.; Toxvaerd, A.; Al-Farra, G.; Bergenfeldt, M.; Krarup-Hansen, A. Outstanding Response to Sorafenib in a Patient with Metastatic Gastrointestinal Stromal Tumour. Case Rep. Oncol. 2021 , 14 , 1567–1573. [ Google Scholar ] [ CrossRef ]
  • George, S.; von Mehren, M.; Fletcher, J.A.; Sun, J.; Zhang, S.; Pritchard, J.R.; Hodgson, J.G.; Kerstein, D.; Rivera, V.M.; Haluska, F.G.; et al. Phase II Study of Ponatinib in Advanced Gastrointestinal Stromal Tumors: Efficacy, Safety, and Impact of Liquid Biopsy and Other Biomarkers. Clin. Cancer Res. Off. J. Am. Assoc. Cancer Res. 2022 , 28 , 1268–1276. [ Google Scholar ] [ CrossRef ]
  • Garner, A.P.; Gozgit, J.M.; Anjum, R.; Vodala, S.; Schrock, A.; Zhou, T.; Serrano, C.; Eilers, G.; Zhu, M.; Ketzer, J.; et al. Ponatinib inhibits polyclonal drug-resistant KIT oncoproteins and shows therapeutic potential in heavily pretreated gastrointestinal stromal tumor (GIST) patients. Clin. Cancer Res. Off. J. Am. Assoc. Cancer Res. 2014 , 20 , 5745–5755. [ Google Scholar ] [ CrossRef ]
  • Trent, J.C.; Wathen, K.; von Mehren, M.; Samuels, B.L.; Staddon, A.P.; Choy, E.; Butrynski, J.E.; Chugh, R.; Chow, W.A.; Rushing, D.A.; et al. A phase II study of dasatinib for patients with imatinib-resistant gastrointestinal stromal tumor (GIST). J. Clin. Oncol. 2011 , 29 , 10006. [ Google Scholar ] [ CrossRef ]
  • van Tilburg, C.M.; DuBois, S.G.; Albert, C.M.; Federman, N.; Nagasubramanian, R.; Geoerger, B.; Orbach, D.; Bielack, S.S.; Shukla, N.N.; Turpin, B.; et al. Larotrectinib efficacy and safety in pediatric TRK fusion cancer patients. J. Clin. Oncol. 2019 , 37 , 10010. [ Google Scholar ] [ CrossRef ]
  • Kang, Y.-K.; George, S.; Jones, R.L.; Rutkowski, P.; Shen, L.; Mir, O.; Patel, S.; Zhou, Y.; von Mehren, M.; Hohenberger, P.; et al. Avapritinib Versus Regorafenib in Locally Advanced Unresectable or Metastatic GI Stromal Tumor: A Randomized, Open-Label Phase III Study. J. Clin. Oncol. Off. J. Am. Soc. Clin. Oncol. 2021 , 39 , 3128–3139. [ Google Scholar ] [ CrossRef ]
  • Serrano, C.; Bauer, S.; Gómez-Peregrina, D.; Kang, Y.-K.; Jones, R.L.; Rutkowski, P.; Mir, O.; Heinrich, M.C.; Tap, W.D.; Newberry, K.; et al. Circulating tumor DNA analysis of the phase III VOYAGER trial: KIT mutational landscape and outcomes in patients with advanced gastrointestinal stromal tumor treated with avapritinib or regorafenib. Ann. Oncol. Off. J. Eur. Soc. Med. Oncol. 2023 , 34 , 615–625. [ Google Scholar ] [ CrossRef ]
  • Ligon, J.A.; Sundby, R.T.; Wedekind, M.F.; Arnaldez, F.I.; Del Rivero, J.; Wiener, L.; Srinivasan, R.; Spencer, M.; Carbonell, A.; Lei, H.; et al. A Phase II Trial of Guadecitabine in Children and Adults with SDH-Deficient GIST, Pheochromocytoma, Paraganglioma, and HLRCC-Associated Renal Cell Carcinoma. Clin. Cancer Res. 2022 , 29 , 341–348. [ Google Scholar ] [ CrossRef ]
  • Tarn, C.; Rink, L.; Merkel, E.; Flieder, D.; Pathak, H.; Koumbi, D.; Testa, J.R.; Eisenberg, B.; von Mehren, M.; Godwin, A.K. Insulin-like growth factor 1 receptor is a potential therapeutic target for gastrointestinal stromal tumors. Proc. Natl. Acad. Sci. USA 2008 , 105 , 8387–8392. [ Google Scholar ] [ CrossRef ]
  • Von Mehren, M.; George, S.; Heinrich, M.C.; Schuetze, S.M.; Yap, J.T.; Yu, J.Q.; Abbott, A.; Litwin, S.; Crowley, J.; Belinsky, M.; et al. Linsitinib (OSI-906) for the treatment of adult and pediatric wild-type gastrointestinal stromal tumors, a SARC phase II study. Clin. Cancer Res. 2020 , 26 , 1837–1845. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Nishimura, J.; Nakajima, K.; Omori, T.; Takahashi, T.; Nishitani, A.; Ito, T.; Nishida, T. Surgical strategy for gastric gastrointestinal stromal tumors: Laparoscopic vs. open resection. Surg. Endosc. 2007 , 21 , 875–878. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Janeway, K.A.; Weldon, C.B. Pediatric gastrointestinal stromal tumor. Semin. Pediatr. Surg. 2012 , 21 , 31–43. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Valadão, M.; de Mello, E.L.R.; Lourenço, L.; Vilhena, B.; Romano, S.; dos Castro, L.S. What is the prognostic significance of metastatic lymph nodes in GIST? Hepatogastroenterology 2008 , 55 , 471–474. [ Google Scholar ]
  • Li, C.; Su, D.; Xie, C.; Chen, Q.; Zhou, J.; Wu, X. Lymphadenectomy is associated with poor survival in patients with gastrointestinal stromal tumors. Ann. Transl. Med. 2019 , 7 , 558. [ Google Scholar ] [ CrossRef ]
  • Stiles, Z.E.; Fleming, A.M.; Dickson, P.V.; Tsao, M.; Glazer, E.S.; Shibata, D.; Deneve, J.L. Lymph Node Metastases in Gastrointestinal Stromal Tumors: An Uncommon Event. Ann. Surg. Oncol. 2022 , 29 , 8641–8648. [ Google Scholar ] [ CrossRef ]
  • Agaimy, A.; Wünsch, P.H. Lymph node metastasis in gastrointestinal stromal tumours (GIST) occurs preferentially in young patients < or =40 years: An overview based on our case material and the literature. Langenbeck’s Arch. Surg. 2009 , 394 , 375–381. [ Google Scholar ] [ CrossRef ]
  • Weldon, C.B.; Madenci, A.L.; Boikos, S.A.; Janeway, K.A.; George, S.; von Mehren, M.; Pappo, A.S.; Schiffman, J.D.; Wright, J.; Trent, J.C.; et al. Surgical Management of Wild-Type Gastrointestinal Stromal Tumors: A Report From the National Institutes of Health Pediatric and Wildtype GIST Clinic. J. Clin. Oncol. Off. J. Am. Soc. Clin. Oncol. 2017 , 35 , 523–528. [ Google Scholar ] [ CrossRef ]
  • Krajinovic, K.; Germer, C.T.; Agaimy, A.; Wünsch, P.H.; Isbert, C. Outcome after resection of one hundred gastrointestinal stromal tumors. Dig. Surg. 2010 , 27 , 313–319. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Jakob, J.; Hohenberger, P. Neoadjuvant therapy to downstage the extent of resection of gastrointestinal stromal tumors. Visc. Med. 2018 , 34 , 359–365. [ Google Scholar ] [ CrossRef ]
  • Hølmebakk, T.; Bjerkehagen, B.; Boye, K.; Bruland, Ø.; Stoldt, S.; Sundby Hall, K. Definition and clinical significance of tumour rupture in gastrointestinal stromal tumours of the small intestine. Br. J. Surg. 2016 , 103 , 684–691. [ Google Scholar ] [ CrossRef ]
  • Petrasova, N.; Snajdauf, J.; Petru, O.; Frybova, B.; Svojgr, K.; Linke, Z.; Mixa, V.; Kodet, R.; Kyncl, M.; Rygl, M. Gastric tumors in children: Single-center study with emphasis on treatment of repeated recurrence. Pediatr. Surg. Int. 2020 , 36 , 917–924. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Hiki, N.; Yamamoto, Y.; Fukunaga, T.; Yamaguchi, T.; Nunobe, S.; Tokunaga, M.; Miki, A.; Ohyama, S.; Seto, Y. Laparoscopic and endoscopic cooperative surgery for gastrointestinal stromal tumor dissection. Surg. Endosc. 2008 , 22 , 1729–1735. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Aisu, Y.; Yasukawa, D.; Kimura, Y.; Hori, T. Laparoscopic and endoscopic cooperative surgery for gastric tumors: Perspective for actual practice and oncological benefits. World J. Gastrointest. Oncol. 2018 , 10 , 381–397. [ Google Scholar ] [ CrossRef ]
  • Kikuchi, S.; Nishizaki, M.; Kuroda, S.; Tanabe, S.; Noma, K.; Kagawa, S.; Shirakawa, Y.; Kato, H.; Okada, H.; Fujiwara, T. Nonexposure laparoscopic and endoscopic cooperative surgery (closed laparoscopic and endoscopic cooperative surgery) for gastric submucosal tumor. Gastric Cancer Off. J. Int. Gastric Cancer Assoc. Jpn. Gastric Cancer Assoc. 2017 , 20 , 553–557. [ Google Scholar ] [ CrossRef ]
  • Pulido, J.; Garavito, J.; Franco, L.; Padilla, L.; Cabrera, F.; Pedraza, M.; Villarreal, R.; Bernal, F. Laparoendoscopic surgery for the treatment of gastrointestinal stromal tumors: A case series. Cir. Y Cir. (Engl. Ed.) 2022 , 90 (Suppl. S1), 121–126. [ Google Scholar ] [ CrossRef ]
  • Teng, T.Z.J.; Ishraq, F.; Chay, A.F.T.; Tay, K.V. Lap-Endo cooperative surgery (LECS) in gastric GIST: Updates and future advances. Surg. Endosc. 2023 , 37 , 1672–1682. [ Google Scholar ] [ CrossRef ]
  • Onimaru, M.; Inoue, H.; Ikeda, H.; Abad, M.R.A.; Quarta Colosso, B.M.; Shimamura, Y.; Sumi, K.; Deguchi, Y.; Ito, H.; Yokoyama, N. Combination of laparoscopic and endoscopic approaches for neoplasia with non-exposure technique (CLEAN-NET) for gastric submucosal tumors: Updated advantages and limitations. Ann. Transl. Med. 2019 , 7 , 582. [ Google Scholar ] [ CrossRef ]
  • Hiki, N.; Nunobe, S.; Matsuda, T.; Hirasawa, T.; Yamamoto, Y.; Yamaguchi, T. Laparoscopic endoscopic cooperative surgery. Dig. Endosc. 2015 , 27 , 197–204. [ Google Scholar ] [ CrossRef ]
  • Hiki, N.; Nunobe, S. Laparoscopic endoscopic cooperative surgery (LECS) for the gastrointestinal tract: Updated indications. Ann. Gastroenterol. Surg. 2019 , 3 , 239–246. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Fero, K.E.; Coe, T.; Fanta, P. Surgical Management of adolescents and young adults with GIST A US Population-based analysis. JAMA Surg. 2017 , 152 , 443–451. [ Google Scholar ] [ CrossRef ] [ PubMed ]
  • Yonkus, J.A.; Alva-Ruiz, R.; Grotz, T.E. Surgical Management of Metastatic Gastrointestinal Stromal Tumors. Curr. Treat. Options Oncol. 2021 , 22 , 37. [ Google Scholar ] [ CrossRef ]
  • Zamulko, O.Y.; Zamulko, A.O.; Dawson, M.J. Introducing GIST and Dieulafoy—Think of Them in GI Bleeding and Anemia. S. D. Med. 2019 , 72 , 528–530. [ Google Scholar ] [ PubMed ]
  • Sorour, M.A.; Kassem, M.I.; Ghazal, A.E.-H.A.; El-Riwini, M.T.; Abu Nasr, A. Gastrointestinal stromal tumors (GIST) related emergencies. Int. J. Surg. 2014 , 12 , 269–280. [ Google Scholar ] [ CrossRef ]
  • Ling, A.L.; Solomon, I.H.; Landivar, A.M.; Nakashima, H.; Woods, J.K.; Santos, A.; Masud, N.; Fell, G.; Mo, X.; Yilmaz, A.S.; et al. Clinical trial links oncolytic immunoactivation to survival in glioblastoma. Nature 2023 , 623 , 157–166. [ Google Scholar ] [ CrossRef ]
  • Wesche, J.; Haglund, K.; Haugsten, E.M. Fibroblast growth factors and their receptors in cancer. Biochem. J. 2011 , 437 , 199–213. [ Google Scholar ] [ CrossRef ]
  • Tomlinson, D.C.; Knowles, M.A.; Speirs, V. Mechanisms of FGFR3 actions in endocrine resistant breast cancer. Int. J. Cancer 2012 , 130 , 2857–2866. [ Google Scholar ] [ CrossRef ]
  • André, F.; Bachelot, T.; Campone, M.; Dalenc, F.; Perez-Garcia, J.M.; Hurvitz, S.A.; Turner, N.; Rugo, H.; Smith, J.W.; Deudon, S.; et al. Targeting FGFR with Dovitinib (TKI258): Preclinical and Clinical Data in Breast Cancer. Clin. Cancer Res. 2013 , 19 , 3693–3702. [ Google Scholar ] [ CrossRef ]
  • Camillo Porta Palma Giglione, W.L.; Paglino, C. Dovitinib (CHIR258, TKI258): Structure, Development and Preclinical and Clinical Activity. Futur. Oncol. 2015 , 11 , 39–50. [ Google Scholar ] [ CrossRef ]
  • Boichuk, S.; Dunaev, P.; Skripova, V.; Galembikova, A.; Bikinieva, F.; Shagimardanova, E.; Gazizova, G.; Deviatiiarov, R.; Valeeva, E.; Mikheeva, E.; et al. Unraveling the Mechanisms of Sensitivity to Anti-FGF Therapies in Imatinib-Resistant Gastrointestinal Stromal Tumors (GIST) Lacking Secondary KIT Mutations. Cancers 2023 , 15 , 5354. [ Google Scholar ] [ CrossRef ] [ PubMed ]

Click here to enlarge figure

The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content.

Share and Cite

Popoiu, T.-A.; Pîrvu, C.-A.; Popoiu, C.-M.; Iacob, E.R.; Talpai, T.; Voinea, A.; Albu, R.-S.; Tãban, S.; Bãlãnoiu, L.-M.; Pantea, S. Gastrointestinal Stromal Tumors (GISTs) in Pediatric Patients: A Case Report and Literature Review. Children 2024 , 11 , 1040. https://doi.org/10.3390/children11091040

Popoiu T-A, Pîrvu C-A, Popoiu C-M, Iacob ER, Talpai T, Voinea A, Albu R-S, Tãban S, Bãlãnoiu L-M, Pantea S. Gastrointestinal Stromal Tumors (GISTs) in Pediatric Patients: A Case Report and Literature Review. Children . 2024; 11(9):1040. https://doi.org/10.3390/children11091040

Popoiu, Tudor-Alexandru, Cãtãlin-Alexandru Pîrvu, Cãlin-Marius Popoiu, Emil Radu Iacob, Tamas Talpai, Amalia Voinea, Rãzvan-Sorin Albu, Sorina Tãban, Larisa-Mihaela Bãlãnoiu, and Stelian Pantea. 2024. "Gastrointestinal Stromal Tumors (GISTs) in Pediatric Patients: A Case Report and Literature Review" Children 11, no. 9: 1040. https://doi.org/10.3390/children11091040

Article Metrics

Article access statistics, further information, mdpi initiatives, follow mdpi.

MDPI

Subscribe to receive issue release notifications and newsletters from MDPI journals

Electromagnetic Subsurface Imaging in the Presence of Metallic Structures: A Review of Numerical Strategies

  • Open access
  • Published: 28 August 2024

Cite this article

You have full access to this open access article

literature review on distribution strategy

  • Octavio Castillo-Reyes   ORCID: orcid.org/0000-0003-4271-5015 1 , 2 ,
  • Pilar Queralt 3 ,
  • Perla Piñas-Varas 3 ,
  • Juanjo Ledo 4 &
  • Otilio Rojas 2  

Electromagnetic (EM) imaging aims to produce large-scale, high-resolution soil conductivity maps that provide essential information for Earth subsurface exploration. To rigorously generate EM subsurface models, one must address both the forward problem and the inverse problem. From these subsurface resistivity maps, also referred to as volumes of resistivity distribution, it is possible to extract useful information (lithology, temperature, porosity, permeability, among others) to improve our knowledge about geo-resources on which modern society depends (e.g., energy, groundwater, and raw materials, among others). However, this ability to detect electrical resistivity contrasts also makes EM imaging techniques sensitive to metallic structures whose EM footprint often exceeds their diminutive stature compared to surrounding materials. Depending on target applications, this behavior can be advantageous or disadvantageous. In this work, we review EM modeling and inverse solutions in the presence of metallic structures, emphasizing how these structures affect EM data acquisition and interpretation. By addressing the challenges posed by metallic structures, our aim is to enhance the accuracy and reliability of subsurface EM characterization, ultimately leading to improved management of geo-resources and environmental monitoring. Here, we consider the latter through the lens of a triple helix approach: physics behind metallic structures in EM modeling and imaging, development of computational tools (conventional strategies and artificial intelligence schemes), and configurations and applications. The literature review shows that, despite recent scientific advancements, EM imaging techniques are still being developed, as are software-based data processing and interpretation tools. Such progress must address geological complexities and metallic casing measurements integrity in increasing detail setups. We hope this review will provide inspiration for researchers to study the fascinating EM problem, as well as establishing a robust technological ecosystem to those interested in studying EM fields affected by metallic artifacts.

Avoid common mistakes on your manuscript.

Article Highlights

Forward and inverse modeling of steel wells remains a challenging task from a computational and numerical perspective

Better understanding of EM fields near metallic artifacts is needed for efficient geo-resources exploration and management

Diverse numerical methods, meshing approaches, and computational strategies enhance EM modeling and imaging with metallic artifacts

For EM modeling and imaging with metallic structures, a multidisciplinary approach is vital

1 Introduction

Geophysical imaging, a branch of geophysics, is focused on studying images of the Earth’s interior. EM imaging techniques aim to produce large-scale high-resolution soil maps that can provide essential information for de-risk any applications focusing on geo-resource exploration. The rigorous generation of EM subsurface models requires solving the forward problem and the inverse problem. In the forward problem, also referred to as forward modeling, synthetic EM fields of the subsurface are computed. Then, in the inverse problem, forward modeling EM responses are iteratively approximated to the real EM data. EM forward modeling is typically a nonlinear mapping, and EM inversion is a nonlinear approximation, which belongs to mathematical regression problems. To maintain clarity throughout this paper, we adopt the term “modeling” to denote the forward problem and employ “imaging” to signify the inverse problem. Furthermore, we consider the EM “footprint” as the spatial distribution and characteristics of the EM response generated by subsurface structures.

Nowadays, EM surveys, both aerial and ground-based, are widely used methods for subsurface exploration. They have been perfected for hydrocarbon exploration as they enable the detection of conductivity contrasts resulting from variations in lithology or fluid properties (Newman and Alumbaugh 1997 ; Eidesmo et al. 2002 ; Avdeev 2005 ; Constable 2006 ; Srnka et al. 2006 ; Orange et al. 2009 ; Constable 2010 ). The same technological tools, however, can be deployed to detect either minerals or fluids and to monitor their migration. Given its transversality, EM modeling and imaging are widely used in other geophysical near-surface prospecting scenarios, such as mineral and resource mining  (Sheard et al. 2005 ; Queralt et al. 2007 ; Yang and Oldenburg 2012 ), \(\text {CO}_{2}\) storage characterization (Girard et al. 2011 ; Vilamajó et al. 2013 ), geothermal reservoir imaging and characterization (Piña-Varas et al. 2015 ; Coppo et al. 2016 ), crustal conductivity studies (Hördt et al. 1992 , 2000 ; Ledo et al. 2002 ; Campanyà et al. 2012 ), and hydrogeological (Chambers et al. 2006 ; Chang et al. 2017 ; Zhang et al. 2016 ), among others.

Combined with an exponential growth in computer performance in the last decade, our capacity to transform EM data into more accurate 3D resistivity distribution maps can now be massively deployed. EM modeling and imaging are carried out by complex algorithms running in both modest and high-performance computers (HPC). These simulation tools allow us to reproduce different Earth medium’s response to external excitation and analyze observed data to infer 3D subsurface resistivity models as correct as possible. The advancement of 3D EM modeling routines has seen significant progress in recent years. Examples of such codes include SimPEG (Heagy et al. 2017 ), emg3d  (Werthmüller 2017 ), PETGEM  (Castillo-Reyes et al. 2018 ), and custEM  (Rochlitz et al. 2019 ). It is worth noting that these referenced codes share the common feature of being open source. These EM modeling algorithms have been proved to validate 3D geological models by direct comparison between data and synthetics in different application fields.

Such EM modeling routines can be employed to analyze 3D land-based realistic configurations in the presence of metallic infrastructures such as power networks (Wirianto et al. 2010 ), pipelines (Klanica et al. 2023 ), railways (Pádua et al. 2002 ; Qi 2023 ), industrial facilities, and wells, among others. The assessment of EM fields in the presence of metallic artifacts has gained attention recently, and several numerical and computational schemes have been studied in different scenarios. Since metallic structures alter the EM field pattern of deep targets, their study in the realm of geo-electromagnetic modeling is fundamental to avoid erroneous or incomplete interpretations. Regardless the numerical scheme or application context, these fundamental research works have demonstrated that the presence of metallic structures in the modeling can be beneficial for generating accurate 3D EM maps (e.g., improving the signal-to-noise ratio, helping to channel currents to depths much greater). In this domain, pioneer works based on analytical or semi-analytic approaches (Wait 1972 ; Wait and Hill 1973 ; Kaufman 1990 ; Kong et al. 2009 ; Cuevas 2014 ) have still a great value as a validation of the numerical methods and solutions, and as a tool to better understand the physics behind the distortion of EM fields due to metallic structures. More recently, works in this line include those presented by Cuevas ( 2022 ) and Cuevas ( 2024 ), offering insights on the topic.

The realistic numerical solution for 3D resistivity models with embedded metallic structures is a challenging issue for two main reasons. First, dealing with high electrical conductivity and magnetic permeability contrast embedded in geological materials, as well as metallic artifacts and wells, produces ill-conditioned linear systems. Second, to accurately capture the footprint of EM fields when large-scale variations (e.g., ranging from cm to km) are present, we require different resolution levels of discretization. As a result, modeling and imaging routines demand efficient meshing strategies to incorporate these metallic structures while using as few mesh elements as possible. Nonetheless, although numerically challenging, 3D geo-electromagnetic modeling and imaging in the presence of realistic metallic artifacts is feasible given the recent improvement in numerical methods and computing power. Out of these studies, the works by Um et al. ( 2015 ), Vilamajó et al. ( 2015 ), Puzyrev et al. ( 2017 ), Heagy et al. ( 2017 ), Cuevas and Pezzoli ( 2018 ), Wilt et al. ( 2020 ), and Castillo-Reyes et al. ( 2021 ) stand out.

In this paper, we review the state-of-the-art developments for EM modeling and imaging in the presence of metallic-cased wells. While our analysis primarily focuses on vertical metal casings, we also discuss other metallic infrastructures, for which most of the conclusions derived from this review remain valid. The paper’s contribution is threefold. First, we examine the physical insights behind metallic artifacts in 3D geo-electromagnetic modeling and imaging from a general perspective. Here, we discuss the physical implications of metallic artifacts on EM footprint. Second, we study the development of algorithms (numerical methods and computational schemes) to generate accurate 3D resistivity distribution maps of the subsurface. Pros and cons of each technique and technological gaps to specific problems are discussed. Thirdly, we examine successful applications of these methods reported in the literature for this analysis. Here, we focus the analysis on two aspects: (i) The effects or disturbances on EM responses measured at deployed stations and (ii) the effects of metallic structures that act as a source/transmitter. Drawing from our literature review, we discuss tailoring schemes to suit application needs and address future challenges in this context.

2 Insights of Metallic Structures in EM Imaging

EM modeling and imaging tools play a key role in investigating, analyzing, and interpreting subsurface electric resistivity distribution. These computational routines are widely exploited for characterization and monitoring of energy reservoirs (e.g., oil, gas, and geothermal), imaging of geologic storage (e.g., CO \(_2\) sequestration), and freshwater reservoir prospecting through mapping resistivity variations. EM data acquisition is inexpensive and has a small footprint in the terrain in comparison with seismic methods. As a drawback, the diffusive nature of EM responses limits the resolution of the obtained volumes of resistivity distribution. Accordingly, EM data are commonly employed as complement to seismic datasets (Harris and MacGregor 2006 ; Eidsvik et al. 2008 ; Hansen and Mittet 2009 ; Harris et al. 2009 ; Du and MacGregor 2010 ; Tveit et al. 2020 ).

Because regions of interest are usually urbanized and industrialized areas, it is expected that metallic infrastructures are present in the vicinity of EM transmitters or receivers. This setting yields a distortion of EM fields recorded at receivers. Therefore, studying this behavior is crucial to avoid misinterpretation of resistivity models. Recent examples stress this phenomenon in EM modeling and imaging include Um et al. ( 2015 ); Vilamajó et al. ( 2016 ); Heagy et al. ( 2017 ); Park et al. ( 2017 ); Reeck et al. ( 2020 ); Um et al. ( 2020 ); Castillo-Reyes et al. ( 2021 ); Heagy and Oldenburg ( 2022 ); Orujov et al. ( 2022a ); Heagy and Oldenburg ( 2023 ). Regardless of the numerical scheme or application contexts, the authors identify two critical aspects of EM modeling affected by metallic structures: (i) modeling complexity from a numerical perspective and (ii) physical behavior and its impact on EM imaging quality. Below we discuss each aspect separately.

Numerical complexity : Modeling steel wells remains a challenging task from a numerical perspective. The large-scale variations of structures range from cm to km and their conductivity values are million times more conductive than geologic features, making conventional EM imaging routines unsuitable to face these problems. With recent modeling advancements and HPC readily accessible, there is renewed interest in facing and understanding the physical behavior of resistivity models containing metallic structures. As a consequence, a considerable number of EM routines have been developed to handle such modeling tasks in recent years (Um et al. 2015 ; Yang et al. 2016 ; Heagy et al. 2017 ; Puzyrev et al. 2017 ; Weiss 2017 ; Castillo-Reyes et al. 2018 ; Kohnke et al. 2018 ; Orujov et al. 2020 ; Hu and Yang 2021 ). The capacities and limitations of state-of-the-art EM modeling are discussed further in Sect.  3 .

Physical behavior and influence on EM fields The contrast in electric and magnetic properties between metallic infrastructure and geological materials results in two main effects: galvanic and inductive. Galvanic effects involve changes in charge density at boundaries and induced currents along metallic structures. These effects intensify when active dipoles are near or within the structure, particularly when the source is at the base of a metallic casing Cuevas ( 2022 , 2024 ). Since steel structures are highly conductive, it is recommended not to place transmitters and measurement stations in the vicinity of metallic artifacts to avoid distortions Grayver et al. ( 2013 ); Um et al. ( 2020 ). However, and depending on the target and the setups, the signal-to-noise ratios in such modeling regions can be improved by the presence of steel structures (Vilamajó et al. 2015 , 2016 ; Puzyrev et al. 2017 ; Cuevas and Pezzoli 2018 ; Anderson 2019 ; Wilt et al. 2020 ; Castillo-Reyes et al. 2021 ). Some studies attempt to address this issue through post-processing (Siemon et al. 2011 ; Reeck et al. 2020 ) or aim to mitigate their influence through careful survey design (Swidinsky et al. 2013 ). Furthermore, the modeling of metallic structures can improve our capacities to detect and image deep localized targets (Sill and Ward 1978 ; Schenkel and Morrison 1990 ; Yang et al. 2009 ; Colombo and McNeice 2013 ; Tietze et al. 2015 ; Um et al. 2015 ; Heagy and Oldenburg 2022 ). The impact of metallic structures on EM imaging is discussed in more detail in Sect.  4 .

Given the points mentioned above, assessment of EM responses under the presence of metallic wells continues to be of difficulty and interest of the scientific community. Figure  1 displays the evolution of EM modeling from a holistic perspective. The relevance of this figure comes from placing the events that played a significant role in shaping the understanding of EM imaging in the presence of metallic wells. This graphical synthesis of the evolutionary process of EM modeling strategies is helpful for observing the influence of numerical methods, parallel solvers and data storage system advancement, availability of high-quality datasets, and, more recently, artificial intelligence solutions. In the following sections, we focus on completing our review in these relevant aspects as well.

figure 1

Visual history of EM imaging based on this literature review

3 Development of Geo-Electromagnetic Algorithms

3D EM imaging algorithms are of great interest in designing survey layouts for understanding and verifying experimental measurements with the purpose of EM data inversion. These simulation tools are instrumental for understanding physical responses and assessing the target detectability of great interest in several diverse applications. Consequently, the development of 3D EM imaging algorithms has increased in the last decades. The net result of this effort is a diverse set of available tools to solve the EM forward/inverse problem in the presence of steel artifacts. This section describes the state-of-the-art developments for EM imaging with embedded metallic structures. We focus our analysis on the three main EM imaging topics: numerical schemes, gridding, and computational aspects.

3.1 Numerical Strategies

Maxwell’s equations govern the EM forward modeling in their diffusive form both in time domain or frequency domain (Zhdanov 2009 ). Several techniques for solving these fundamental equations have been developed. These numerical developments are based on four major approaches: finite differences (FD; (Mackie et al. 1994 ; Newman and Alumbaugh 2002 ; Davydycheva et al. 2003 )), finite volumes (FV; (Hermeline 2009 ; Jahandari and Farquharson 2014 )), finite elements (FE; (Jin 2015 ; Um et al. 2013 ; Key and Ovall 2011 )), and integral equations (IE; (Raiche 1974 ; Wannamaker et al. 1984 ; Wannamaker 1991 ; Xiong and Tripp 1997 )). We refer to Avdeev et al. ( 2002 ), Avdeev ( 2005 ), Börner ( 2010 ), and Pankratov and Kuvshinov ( 2016 ) for comprehensive reviews of numerical method developments for geo-electromagnetic modeling. Below we discuss the most relevant aspects of each numerical scheme within the context of EM imaging in the presence of metallic infrastructures and wells.

3.1.1 Finite Difference (FD) Scheme

The FD scheme for EM modeling was introduced by Yee ( 1966 ). Ward and Hohmann ( 1988 ) and Shlager and Schneider ( 1995 ) illustrate their rapid growth for solving Maxwell’s equations in the 1970 s and 1980 s. Druskin and Knizhnerman ( 1994 ), Mackie et al. ( 1994 ), and Gandi ( 1998 ) also develop and promote FD schemes in the 1990 s. After that, several works have been published dealing with FD schemes for forward and inverse problem in geo-electromagnetics (Alumbaugh et al. 1996 ; Newman and Alumbaugh 2002 ; Davydycheva et al. 2003 ; Streich 2009 ). The popularity of FD for EM imaging and inversion is due to its relatively straightforward computational implementation and fairly simple geometry handling. In addition, the structured nature of FD codes can be implemented efficiently on vector architectures which makes feasible solving realistic and complex problems on HPC. However, the main FD drawbacks is the inability to work on unstructured grids. Therefore, stair-case gridding strategies are needed to represent complex geological bodies, curved objects/boundaries, or other small geometrical details. As a result, mesh sizes can quickly increase when model regions do not fit rectangular meshes. This is particularly evident in cases such as models featuring realistic topography or bathymetry or those containing bodies of varying spatial scales (e.g., commonly in EM imaging when metallic infrastructures/wells are presented). It is worth mentioning that octree grids (semi-unstructured meshes) offer more flexibility by dividing the hexahedral elements close to the refinement region into smaller cells (Grayver and Bürg 2014 ). However, this approach is restricted at some point due to regular meshes limitations (Haber and Heldmann 2007b ; Jahandari et al. 2017 ).

The FD method has been applied to study resistivity models with embedded metallic structures despite its spatial discretization limitations. Wilt and Alumbaugh ( 2003 ) present a review of successful case studies of two non-traditional EM techniques for characterization and monitoring of energy reservoirs (e.g., oil and geothermal). Furthermore, the authors present the potential of EM imaging for water flood tasks. Synthetic EM data were modeled and inverted to build 2D resistivity maps and study the pattern of EM fields in the vicinity of the metallic borehole. This work establishes that imaging and inversion of EM data could reveal helpful information about the reservoir and its content. Commer et al. ( 2015 ) presents a FD time-domain algorithm to compute EM responses in the presence of highly conductive steel infrastructure. The authors revisited the literature and proposed an approach to use large time steps in comparison with previous works, alleviating the generally high computational cost (e.g., the typical approach is to use small time steps on an extremely fine mesh). To validate FD method, Commer et al. ( 2015 ) carried out simulations for hydraulic fracturing studies and demonstrate the potential of metallic-cased boreholes to illuminate deep target zones. Later, Puzyrev et al. ( 2017 ) introduce a full 3D and parallel FD scheme to investigate the metallic-cased well effect and its applicability on the borehole-to-surface configuration of the Hontomín CO \(_2\) storage site (experimental site located in the North of Spain). Here, different setups (e.g., source position, resistivity model, steel-cased dimensions) were studied. The numerical EM responses show a good agreement with real field data. Although the used FD mesh is extremely fine, the authors report considerable improvements in computational cost due to the capacities of massively parallel computations. More recently, Wilt et al. ( 2020 ) employ a FD method to investigate the metallic-cased borehole integrity. By studying the continuity of electrical current flow, the authors were able to analyze the properties of the steel wellbore in different conditions (e.g., transmitter position, resistivity distributions, fluid used during drilling). The applicability of this method is evident for subsurface resource extraction, energy storage, and hazardous waste disposal.

Regardless of the application context, the authors of the mentioned FD approaches highlight two aspects to discuss and resolve. First, the adapted mesh design reduces the computational cost of solving resistivity models with embedded structures of considerably different scales. Second, the efficient solution of the linear system of equations (LSE) in cutting-edge massive parallel computing architectures. Here, reordering algorithms for sparse matrices and vector-based implementations (e.g., GPU-based schemes) are required. Noteworthy, FDTD schemes on curvilinear coordinates fitting body geometries to solve Maxwell equations have been used for decades (Holland 1983 ; Janaswamy and Liu 1997 ; Xie et al. 2002 ). Here, the most representative works are those that have been developed by Hue et al. ( 2005 ); Lee and Teixeira ( 2007 ); Lee et al. ( 2011 ).

3.1.2 Finite Volume (FV) Scheme

FV methods discretize the differential form of Maxwell’s equations. These methods are versatile and applicable to cell-centered, staggered, and unstructured meshes, enabling the representation of geological bodies with complex geometries.

The FV methods for EM modeling were introduced by Ward and Hohmann ( 1988 ) and developed and promoted by Madsen and Ziolkowski ( 1990 ) and Clemens and Weiland ( 2001 ). Later, several and diverse FV-based works have been published for EM imaging in geophysics (Haber et al. 2000 ; Haber and Ascher 2001 ; Haber and Heldmann 2007a ; Hermeline 2009 ; Jahandari and Farquharson 2014 ; Guo et al. 2020 ).

The applicability of FV schemes for EM imaging in the presence of metallic structures has been tackled recently by using SimPEG code (Heagy et al. 2017 ). More concretely, a FV approach for modeling EM problems where steel-cased boreholes are present was introduced by Heagy and Oldenburg ( 2019a ). Here, the authors investigated the EM field pattern on cylindrically symmetric and 3D cylindrical meshes for computational domains with large physical property contrasts and a large disparity in length scales. The upgraded version of SimPEG presented in Heagy and Oldenburg ( 2019a ) demonstrates the value of FV computational tools to simulate, explore, and understand the behavior of EM fields when modeling steel-cased structures. Later, Heagy and Oldenburg ( 2019b ) examine strategies to approximate steel-cased structures to reduce the computational cost of the FV simulations. Furthermore, the impact of physical parameters (e.g., background resistivity, steel-cased resistivity, and dimensions) on the amplitude of EM responses is analyzed. More recently, Hu and Yang ( 2021 ) used a FV scheme to simulate EM effects of metallic-cased structures for high-quality monitoring of the fracturing process. The authors proposed a FV mesh where the edges have a specific resistivity value. Such mesh edges correspond to the boundaries of thin resistive objects. Although the method provides a reference for the optimal deployment of EM recorders, its applicability is limited to typical frequencies. Finally, Heagy and Oldenburg ( 2022 ) perform FV simulations to investigate galvanic currents as well as image currents that are induced in the subsurface. Here, the authors studied the EM field pattern for monitoring applications.

The authors of FV schemes also stressed the importance of understanding the impact of metallic wells in EM fields. However, the inclusion of permeability effects and large-scale 3D EM modeling and inversion, mainly when physical features of the steel structure are unknown, are open questions.

3.1.3 Integral Equation (IE) Scheme

In IE-based formulations, Maxwell’s equations in differential form are treated as integral equations that require Green’s function (Duffy 2001 ). Following this procedure, the scattering form (SF) of Maxwell’s equations is obtained. The subsequent steps include discretizing the SF, solving the resulting dense LSE, and post-processing the EM responses. The IE method only meshes the scattering regions (e.g., anomalous areas) instead of the entire computational domain, which represent the main IE advantages over the FD, FV, and FE methods. As a result, IE formulations have been proposed to save computational resources (e.g., run-time and memory consumption), especially for 3D models, during the forward modeling. However, IE schemes usually require simple background input resistivity models (low-resistivity variations), which may not always be available in the realm of 3D EM imaging. We refer to Avdeev et al. ( 2002 ) and Zhdanov et al. ( 2006 ) for comprehensive reviews of IE methods for 3D geo-electromagnetic modeling.

The IE approach for the solution of in-homogeneous EM responses was first proposed by Dmitriev ( 1969 ) and Hohmann ( 1971 ). Later, Wait ( 1972 ) and Wait and Hill ( 1973 ) employ an IE method to compute EM responses of a half-space domain containing an infinite line conductor and a vertical cylinder of finite length. A volume IE scheme on hexahedral meshes to compute 3D EM responses was also introduced by Hohmann ( 1975 ). Later, Holladay and West ( 1984 ) employ an IE strategy to simulate hollow, infinite-length cylinders, and finite-length cylindrical shells embedded in a uniform half-space. The comparison between synthetic and experimental data demonstrated that EM fields are significantly altered by the presence of steel oil well casings. Qian and Boerner ( 1995 ) developed an IE method to model layered Earth setups in the presence of line conductors. Despite the excellent agreement between simulated data and reference solutions, the authors stressed the challenge of solving more realistic and complicated setups.

The method of moments (MoM), actively developed by the mining sector, is another IE scheme that has been applied to compute synthetic EM responses in the presence of steel structures. In the MoM, the resistive objects are discretized as a set of smaller segment lines. The sum of these small segments results in an approximation of electric dipole sources. Tang et al. ( 2015 ) applied the MoM principles to model a half-space where a steel well is treated as a grounded electrode in a oil and gas reservoir monitoring. Later, Patzer et al. ( 2017 ) employed an MoM scheme to investigate the interaction of EM fields when multiple metallic structures are embedded in 3D resistivity models. Kohnke et al. ( 2018 ) developed an MoM-based modeling routine to compute EM responses of multiple 3D metallic-cased wells in oil and gas production environments. Despite the algorithm supporting transmitter of arbitrary frequency and location and steel-cased wells of arbitrary geometry, only layered Earth resistivity models are considered. Anderson ( 2019 ) also introduced a modeling routine inspired on the MoM for reservoir monitoring including electrically conductive steel structures. More recently, Orujov et al. ( 2020 ) introduced an IE methodology to simulate horizontal metallic pipelines on the seafloor. To verify the robustness of the proposed method, the authors simulated different horizontal pipeline metallic structures. Orujov et al. ( 2022a ) reported considerable reduction ratios in computational effort for the solution of layered resistivity models. These studies also examines the capabilities of a hybrid MoM scheme to model and invert EM data over steel-cased wells. Two test sites are considered, one located in eastern Colorado and the other at the Geophysical Discovery Lab (GDL) on the Colorado School of Mines campus. The experiments show that using this hybrid MoM approach makes it possible to reduce subsurface conductivity model artifacts introduced by the steel casing, enabling the geology around the steel infrastructure to be characterized.

3.1.4 Finite Element (FE) Scheme

Like the methods mentioned above, the FE is a widely used numerical technique for obtaining approximate solutions to boundary-value problems (BVP). The FE principle is to replace a whole continuous computational domain by a number of subdomains in which interpolation functions with unknown coefficients represent the unknown problem solution. Thus, the solution of the entire system is approximated by a finite number of unknown coefficients. The sparse LSE is obtained by applying variational methods such as the Ritz or Galerkin formulations (Burnett 1987 ). Finally, the sparse LSE is solved, and the FE interpolation functions are employed to post-process the EM fields.

The FE solutions for EM modeling are categorized into nodal-based and edge-based families. For accurate nodal-based FE computations, the divergence-free condition of the EM responses needs to be imposed to mitigate possible spurious solutions of the numerical modeling (Jin et al. 1999 ). A traditional strategy to address this issue is to formulate the EM problem in terms of electric potentials. However, numerical convergence can drop due to numerical differentiation required to compute EM responses (Um et al. 2013 ; Grayver and Kolev 2015 ). In contrast, the edge-based solutions provide stable numerical approximations by proper discretization of the curl space to which the EM fields belong (Nédélec 1980 ; Jin et al. 1999 ). Regardless of the chosen FE basis function type, FE approaches allow precise representations of complex geological geometries with less severe increase in problem sizes.

The use of FE methods for geo-electromagnetic imaging dates back to at least the 1970s, where 2D solutions to direct currents resistivity problems were investigated (Coggon 1971 ). Later, Rodi ( 1976 ) introduced a FE scheme to simulate passive EM methods on quadrilateral meshes. A considerable improvement in accuracy ratios and computational effort for 2D EM modeling was by the FE algorithm presented in Rijo ( 1977 ). Other pioneering works on 2D EM modeling are those presented by Wannamaker et al. ( 1986 ) and Wannamaker et al. ( 1987 ). For EM modeling in 3D space, the computational cost of FE increased dramatically. Therefore, with the development of computing power, FE algorithms for 3D EM modeling gained a proficient increase development (Mur 1991 ; Zyserman and Santos 2000 ; Schwarzbach 2009 ; Key and Ovall 2011 ; Schwarzbach et al. 2011 ; da Silva et al. 2012 ; Puzyrev et al. 2013 ; Castillo-Reyes et al. 2018 ; Rochlitz et al. 2019 ; Castillo-Reyes et al. 2022b ). It is worth noting that none of the referenced FE codes supports variable magnetic permeability, which is both a desirable feature and a significant challenge (see Sect.  2 ) in the domain of numerical EM modeling and EM imaging, particularly in the presence of metallic artifacts.

Since FE schemes can overcome the issues regarding structured meshes due to their full flexibility concerning complex geometrical structures using unstructured meshes, it has been widely used for EM modeling when small metallic structures are present. One of the first attempts of 3D EM modeling using the FE method dates to the 1990 s, when Wu and Habashy ( 1994 ) presented numerical simulation methods of metallic well responses and their validation against experimental data in oil reservoirs. Later, Um et al. ( 2015 ) presented a time-domain FE algorithm to simulate scenarios where the steel-cased well is used as a virtual transmitter to improve the sensing capacity of deep targets. An adaptive time stepping is proposed to reduce the computational modeling cost. Also, the steel-cased well is approximated with a rectangular prism, which improves overall mesh quality without sacrificing quality in the computed EM responses. Another time-lapse 3D FE method to compute 3D EM responses was presented by Tang et al. ( 2015 ), where vertical metallic-cased borehole is used as a transmitter to excite the resistivity model. Despite the considerable computational cost, the comparison between synthetic and analytical data demonstrated that steel-cased wells could be used as source electrodes to improve reservoir monitoring tasks.

Weiss et al. ( 2016 ) conducted FE simulations to assess the usefulness of direct-current resistivity data for characterizing subsurface fractures. This study involved a geophysical experiment, where a grounded current source was deployed within a steel-cased borehole. The proposed method is advantageous, in terms of computational cost, for detecting and monitoring the time evolution of electrically conducting fractures. Other FE relevant work was presented by Cuevas and Pezzoli ( 2018 ) where an in-depth analysis of EM fields arising in the vicinity of metallic-cased wells is performed. The FE approximations reproduce with sufficient reliability the behavior of EM fields on challenging oil and gas models. Recently, a novel FE approach to simulate the casing effects on EM measurements was proposed by Um et al. ( 2020 ). To avoid using extremely fine meshes, the authors modeled the metallic casing as a combination of a short solid conductive prism and a long linewise perfect electric conductor (PEC; (Zhu and Cangellaris 2006 )). Since PEC discretizations are volumeless, an excessive number of small elements in the vicinity of the steel casing is not needed, thus reducing the computational cost considerably. Finally, Castillo-Reyes et al. ( 2021 ) combined high-order meshes with adaptive gridding. The authors considered different setups of a steel-cased well in a geothermal application context. A solid cylinder is used to model the steel-cased well. An adaptive-meshing technique has been validated in land contexts, particularly to incorporate small structures into the full 3D modeling routine. Numerical results presented by these authors are almost identical with respect to real data measurements and confirm that metallic casing presence strongly influences EM responses. Although, its effect are limited to the close vicinity of the steel-cased well.

3.2 Meshing

Mesh design is fundamental to the formulations and implementation of numerical methods and defines the realistic degree of geometrical representation of geological structures. Recently, Spitzer ( 2022 ) reviewed the different types of FE used to model vector EM fields and scalar potentials, and discussed the types of meshes underlying the discretization schemes with respect to their ability to represent arbitrary geometries. Mesh design falls into two classes: structured meshes and unstructured meshes. The generation of structured meshes is relatively simpler than unstructured grids that may be time consuming. Here, we discuss the most relevant aspects of each meshing approach.

FD-based formulations mainly dominate the use of structured meshes. In this approach, the SF of the governing equations is transformed into a curvilinear coordinate system aligned with the target surface. This process can be easily applied to modeling simple geometries. Additionally, nodal neighbor connectivity for structured meshes simplifies its computational implementation. However, this also limits its application scope, making it unsuitable for modeling highly complex geometries. Furthermore, when refinement of specific regions is required (e.g., source or receiver positions), unnecessary small mesh spacing in the other areas of the computational domain is produced. Given its simple implementation and despite spatial discretization limitations, structured meshes have been applied to compute EM responses in the presence of metallic structures (Wilt and Alumbaugh 2003 ; Commer et al. 2015 ; Puzyrev et al. 2017 ; Wilt et al. 2020 ).

Cylindrical meshes are another type of structured grids. These meshes are defined in terms of radial position, vertical position, and azimuthal position. They belong to the tensor mesh class and are particularly valuable for solving differential equations with rotational symmetry. Codes based on cylindrical meshes offer computational efficiency and the capability to resolve fine-scale physics (Heagy et al. 2017 ). However, cylindrical meshes are most suitable for problems exhibiting rotational or axial symmetry. They may not be appropriate for scenarios lacking such symmetry, where other mesh types like Cartesian or unstructured meshes are more suitable. Additionally, handling complex boundaries, especially those with irregular shapes or interfaces, can pose challenges when using cylindrical meshes compared to alternative mesh types. Special techniques are often necessary to address these complexities, potentially leading to increased computational overhead and requiring additional code development effort (Spitzer 2022 ).

The design and use of unstructured meshes were proposed to overcome the inherent geometrical discretization limitations of structured grids. In this type of meshes, the SF of the governing equations is discretized by the FV or FE method. Unstructured meshes can accurately segment curved boundaries of challenging geological bodies such as topography, bathymetry, or small structures like boreholes. While unstructured meshes offer geometric advantages, their utilization in EM modeling and imaging with finely meshed casings rapidly becomes numerically prohibitive and highly ill-conditioned. Therefore, the use of adaptive mesh refinement technologies is needed. These strategies positively impact the size of sparse LSE arising from numerical discretization. As a result, using unstructured meshes and goal-oriented meshing for FE computations has gained wide influence. A variety of efficient FE meshing techniques, automatic or non-automatic, have been proposed for EM modeling (Key and Ovall 2011 ; Schwarzbach et al. 2011 ; Ren et al. 2013 ; Grayver and Kolev 2015 ; Castillo-Reyes et al. 2018 , 2019 , 2022a ; Yang 2023 ). The main objective of these strategies is to produce accurate EM responses at discrete locations (e.g, receiver positions) while avoiding excessive mesh refining around such regions.

Despite its benefits in terms of accuracy and computational effort, tailored meshing (or goal-oriented meshing approaches) for EM imaging in the presence of metallic structures is an open topic. As main difficulties of unstructured meshing: (i) large number of grid elements to discretize the geometries (e.g., circular geometries of steel-cased wells) and (ii) poor mesh quality from mixing extreme multi-scale grid elements. One of the first attempts to build adapted mesh in this regard was presented by Um et al. ( 2017 ), where a tetrahedral mesh generation strategy for 3D marine controlled-source modeling was introduced. The applicability of this approach was evaluated for monitoring oil fluid movements. Here, several source-receiver configurations were employed to investigate the EM fields sensitivity to resistivity variations at reservoir depths. The numerical experiments demonstrated that the mesh density does not strongly depend on the maximum source-receiver offset due to the numerical dispersion error oscillations. As a result, the authors identify three main advantages of the proposed meshing technique: (i) Adapted meshes can effectively reduce the number of elements around receivers and steel-cased wells, (ii) the design of meshes with regions of different characteristic element sizes allows the modeling of large computational domains, and (iii) tailored meshes for a subset of source-receiver configurations makes it possible to compute them simultaneously using parallel computers.

Another novel meshing approach to solve EM scattering problems in the presence of thin conductors was presented by Weiss ( 2017 ). To avoid the excessive number of elements concentrated in a volumetrically small region of the computational domain, this approach employs tetrahedral FE meshes where the thin steel structure is approximated by a set of connected edges with resistivity values explicitly defined. The benchmarking tests demonstrated that these FE meshes are favorable in terms of accuracy and computational cost. Note that this approach is sequential. In addition to the previous approach, another meshing technique is designed to reduce meshing cost. Methods like the MoM and techniques involving edge or surface conductivity of the input mesh, as well as thin-sheet modeling, belong to this category (Kohnke et al. 2018 ).

The aforementioned valuable works use adaptive-meshing technologies in conjunction with low-order FE formulations. However, the use of higher-order FE methods for modeling EM problems was recently reported (Schwarzbach et al. 2011 ; Grayver and Kolev 2015 ; Castillo-Reyes et al. 2019 ; Rochlitz et al. 2019 ). To our knowledge, the first attempt of using a high-order FE method on tailored meshes to compute EM responses in the presence of small metallic-cased wells was presented by Castillo-Reyes et al. ( 2021 ). Here, the authors validated an adaptive-meshing technique and its incorporation into a full 3D high-order FE EM modeling tool. The proposed tailored meshing technique has been evaluated in a geothermal exploration context, and different transmitter-receiver configurations on several 3D resistivity models have been modeled. It has been observed that the tailored meshing proved to be capable of dealing with multiple resolution discretizations and challenging resistivity models (synthetic and experimental data). Furthermore, a rigorous convergence test showed that the design of adapted meshes provide accurate EM responses while avoiding unnecessary refinement in the whole computational domain. Recently, Castillo-Reyes et al. ( 2023 ) evaluated the benefits and computational effort (e.g., run-time and memory consumption) of high-order FE, goal-oriented mesh refinement, and PEC formulations. The numerical results confirm that the studied numerical schemes benefit computing EM responses for realistic 3D EM models with small embedded steel structures.

3.3 Computational Strategies

Modeling and inversion of 3D EM datasets using cutting-edge computational strategies have a fundamental role in solving the next generation of geoscience problems. In real-life setups, these problems are complex and computationally expensive. A multidisciplinary collaboration strategy is key to understanding and solving the physical equations, preprocessing and post-process the associated data with physical experiments, and building interpretations from the analysis of the obtained numerical results. Below we discuss the most relevant aspects in terms of computation complexity for the solution and interpretation of EM data in the presence of metallic structures.

3.3.1 Solvers

Regardless of the chosen selected numerical scheme and target application, EM modeling and imaging methods can be categorized into frequency-domain and time-domain approaches. In both instances, these methods entail algebraic problems that simplify the governing Maxwell’s equations into a linear system of equations (LSE). This LSE can be written as \({\mathbb {A}} \varvec{x=b}\) , where \({\mathbb {A}}\) is the matrix defined by the input resistivity model and mesh discretization, \({\varvec{x}}\) is the vector of unknown EM fields or degrees of freedom (dof), and \({\varvec{b}}\) is given by a source term and boundary conditions. Note that matrix \({\mathbb {A}}\) is sparse, complex, and symmetric for FD, FV, and FE formulations. For IE-based solutions, \({\mathbb {A}}\) is dense, complex, and asymmetric.

The resulting LSE can be solved in an iterative or direct manner. These solving approaches are comparable in terms of memory demands and convergence rates. Below, we delve into the most pertinent aspects of each one.

Iterative solvers (IS) usually require less memory and are often the preferred strategy for solving very large LSE. Furthermore, IS can achieve better scalability ratios in massively parallel computers. As a result, IS have been used to solve LSE arising from EM modeling (Newman and Alumbaugh 1997 ; Puzyrev et al. 2013 ; Castillo-Reyes et al. 2018 ). Here, the parallel iterative methods provided by the PETSc library (Balay et al. 2019 ) arise as the most popular. However, the use of IS for EM modeling with metallic structures is scarce because meshes with large-scale variations and highly resistivity contrasts lead to ill-conditioned sparse matrices. This numerical instability, quantified by the condition number of matrix \({\mathbb {A}}\) , often results in poor convergence of the IS (Schwarzbach 2009 ; Castillo-Reyes et al. 2019 ). As a result, ad hoc preconditioning techniques have been proposed to speed up the IS convergence. Among these iterative preconditioners, Jacobian and successive over-relaxation preconditioners arise as the most simple and cheaper options from a computational perspective (Axelsson 1996 ; Um et al. 2013 ; Castillo-Reyes et al. 2018 ). Preconditioners based on multigrid methods are more advanced solutions (Mulder 2006 ; Koldan et al. 2014 ; Grayver and Kolev 2015 ). In addition, the computational effort of IS grows linearly with the number of sources (e.g., number of \({\varvec{b}}\) vectors).

Pivoting and matrix scaling techniques allow direct solvers (DS) to mitigate error growth during matrix factorizations. Once \({\mathbb {A}}\) factorization is available, simple forward/backward substitutions allow modeling multiple source scenarios, with one \({\varvec{b}}\) for each source. Despite the benefits from a numerical perspective, the main disadvantage of DS is that, especially for large-scale problems, the computation of the vector solution \({\varvec{x}}\) can be memory-consuming prohibitive. Furthermore, the number of floating-point operations (flops) required to perform the matrix factorization is huge and grows non-linearly with the LSE size. Consequently, the use of DS for 3D EM modeling and imaging problems has traditionally been considered computationally expensive. However, the continuous improvement in sparse DS and computing power led to applying DS solutions even to large-scale 3D EM forward and inverse problems. Here, the sparse direct methods provided by WSMP  (Gupta 2000 ), PaStiX  (Hénon et al. 2002 ), SuperLU_DIST  (Li and Demmel 2003 ), PARDISO  (Schenk and Gärtner 2004 ), UMFPACK  (Davis 2004 ), SuperLU  (Li 2005 ), and MUMPs  (Amestoy et al. 2016 ) arise as the most popular.

Given numerical advantages and long with the availability of modern massively parallel computers, the use of DS has gained traction to solve EM imaging problems with embedded metallic structures. Here, the MUMPs solver have been widely employed in for oil and gas applications (Streich 2009 ; Grayver et al. 2013 ; Shantsev et al. 2017 ; Um et al. 2020 ) and for geothermal energy reservoir characterization (Castillo-Reyes et al. 2021 , 2023 ). The PARDISO solver has been also used for 3D EM modeling of the casing effect on a borehole-to-surface in an oil and gas setup (Puzyrev et al. 2017 ; Heagy and Oldenburg 2019a , b , 2022 ). In all these MUMPs and PARDISO , an excellent agreement between simulated data and reference solutions have been observed. Furthermore, the authors stressed the challenge of not exceeding the memory limits and maintaining a tractable computational cost, particularly for inversion of 3D EM data.

Despite the notable advancements achieved in the field, the efficient resolution of subsurface modeling and inversion problems remains a significant challenge. One particular issue in simulating EM behavior in the presence of metallic structures is the high material contrast between steel and air. Steel wells exhibit a high electrical conductivity, approximately \(10^{6}\) S/m, while air acts as a near insulator, with a conductivity of around \(10^{-14}\) S/m. Despite the significant contrasts in electrical conductivity, spanning 20 orders of magnitude, several techniques have been developed and successfully validated to mitigate substantial numerical errors that could potentially lead to incorrect results. Pioneering works in this context include those presented by Gillman and Barnett ( 2013 ), Um et al. ( 2015 ), Heagy and Oldenburg ( 2019b ), Um et al. ( 2020 ), Chen et al. ( 2021 ), Heagy and Oldenburg ( 2022 ), Helsing et al. ( 2022 ), and Orujov et al. ( 2022a ).

3.3.2 Parallelism

High-performance computing (HPC) has widely proved to play a crucial role in technology innovation in almost all areas of science and industry (Osseyran and Giles 2015 ). The topics of 3D EM modeling and imaging are not foreign to massively parallel computing resources. With the impressive advance of HPC technology in the 1990s, computation of EM fields for modeling and inversion has matured considerably. Furthermore, parallel computing technologies has allowed us to deal with extremely large and challenging problems, making modeling and inversion of EM dataset practical for real industrial use. Often cited publications about HPC role for geo-electromagnetics are Alumbaugh et al. ( 1996 ), Newman and Alumbaugh ( 1997 ), Oristaglio and Spies ( 1999 ), Zyserman and Santos ( 2000 ), Zhdanov and Wannamaker ( 2002 ), Key and Ovall ( 2011 ), Grayver et al. ( 2013 ), Puzyrev et al. ( 2013 ), Koldan et al. ( 2014 ), Newman ( 2014 ), Grayver and Kolev ( 2015 ), Heagy et al. ( 2017 ), Castillo-Reyes et al. ( 2018 ), Castillo-Reyes et al. ( 2019 ), Rochlitz et al. ( 2019 ), and Werthmüller et al. ( 2021 ).

Parallel solutions to EM imaging and inverse problems aim to face the large-scale computing needs that imposed by the physical diffusion of EM wavefields and computational demands for accurate solutions. Regardless the numerical method, application context, and computational architecture, state-of-the-art EM imaging methods should be efficiently implemented on HPC and be sought for:

Providing accurate solutions in a feasible run-time . The LSE that results from the EM modeling problem is sparse, large, and highly ill-conditioned. Hence, HPC technologies are essential to solving (iteratively or directly) these LSE effectively. This issue is particularly relevant for LSE arising from industrial-scale problems (might involve over \(100\,000\) LSE solutions if it fuels an inversion process (Osseyran and Giles 2015 )). The arrival of heterogeneous HPC platforms enables new parallel approaches to speed up solver computations. Modern graphics processing units (GPUs) offer tremendous potential for performance and efficiency in numerous and diverse large-scale applications for science and engineering. Since GPUs are suitable for computationally intensive scientific tasks, it is interesting to try accelerating solver computations by turning general-purpose processor implementations into GPU architectures. We refer to the following papers for GPU implementations in the context of EM modeling and inverse modeling: Commer ( 2011 ), Sommer et al. ( 2013 ), Dagostini et al. ( 2021 ), Yang ( 2021 ), Yang ( 2023 ), and Demirci ( 2022 ).

Tackling problems efficiently on HPC architectures . HPC implementations require careful considerations of memory hierarchies, communication modes, and algorithm scalability, among implementation details. Since HPC is evolving in a wave of impressive advances, these aspects are fundamental for efficient parallel EM computations. Furthermore, these computational considerations will be even more representative for the upcoming exascale supercomputing era (Shalf et al. 2011 ). Thus, research on new parallel programming paradigms to increase the performance of EM modeling routines and better use of HPC resources is critical.

Providing flexible workflows with easy addition/remotion of software components . Parallel computing environments are complex, and using flexible frameworks for developing HPC software packages for EM imaging reduce the development costs of new functionalities. In the presence of single or multiple EM (CSEM, MT, gravity) datasets, these frameworks should offer amenable coupling and execution of alternative modules for forward and inverse modeling, LSE solution, result assessment, and uncertainty quantification, to define effective numerical strategies. Of great importance in that these frameworks must favor software portability, fault tolerance, and input/output visualization. Framework flexibility, robustness, and portability would allow the interpretation of dense coverage and multi-component data volumes. For instance, SimPEG has been developed toward these goals (Heagy et al. 2017 ).

Nevertheless, these remarkable benefits also give rise to a set of practical challenges that warrant careful consideration. While the concept of parallelization over a range of frequencies appears to be a straightforward approach (Zyserman and Santos 2000 ; Key and Ovall 2011 ; Puzyrev et al. 2013 ; Grayver and Kolev 2015 ; Yang 2023 ), the practical implementation of certain strategies, such as domain decomposition (Zyserman and Santos 2000 ; Elías et al. 2022 ), which involves dividing the computational domain into smaller data subdomains local mesh with a subset of data for parallel processing (Yang and Oldenburg 2016 ; Yang et al. 2019 ), faces inherent limitations when dealing with simulations involving metallic structures. This issue becomes particularly pronounced due to the considerable spatial footprint associated with the source utilized in these simulations, which is typically substantial in the case of metallic wells. As a result, direct application of domain decomposition schemes is not readily feasible when the source possesses a significant spatial extent, as is often the case in the context of metallic wells. Consequently, employing conventional domain decomposition techniques may not be practical or efficient, leading to a substantial computational demand that necessitates the utilization of a large number of mesh elements to accurately simulate EM behavior in the presence of metallic artifacts.

In essence, the complex nature of subsurface EM modeling, particularly in scenarios involving metallic wells, necessitates the exploration of innovative HPC strategies that can effectively manage the inherent challenges associated with the large spatial footprint of sources and large conductivity contrasts. These challenges underscore the importance of ongoing research efforts to develop tailored approaches that balance computational efficiency with the need for accurate and reliable simulations in the presence of metallic artifacts.

3.3.3 Artificial Intelligence (AI)

AI technologies employ algorithms that allow computers to simulate and solve problems that usually require human intelligence. The simulation of human intelligence processes with minimal human intervention can match or exceed human performance. To mimic human perception, learning, and reasoning, AI requires many parameters and large dataset sizes to train complex algorithms. With recent computing power, data storage system advancements, and availability of high-quality datasets, AI technologies have transitioned from theory to application. In particular, artificial neural networks (ANNs) focused on mimicking human brain operations represent an AI technology with a vast number of applications in Earth sciences (for instance, see Ashena and Thonhauser ( 2015 ) and Sun et al. ( 2022 ), for a general review). While we find a significant number of ANN geophysical applications, models assisting the processing of EM data carrying effects from metallic bodies are very recent and scarce. We provide some reference works for comparison in the following paragraphs.

For geophysical prospecting tasks, ANN have already been successfully applied in seismic imaging and inversion (Baddari et al. 2009 ; Lewis and Vigh 2017 ; Xiong et al. 2018 ; Yang and Ma 2019 ; Zheng et al. 2019 ; Iturrarán-Viveros et al. 2021 ), geophysical workflow optimization (Van der Baan and Jutten 2000 ; Araya-Polo et al. 2019 ; Biswas et al. 2019 ; Di et al. 2020 ), and uncertainty quantification (Das et al. 2019 ; Siahkoohi et al. 2020 ). ANN has been proved useful for modeling and inverting EM datasets. In this regard, pioneer works by Puzyrev ( 2019 ) and Puzyrev and Swidinsky ( 2021 ) introduced ANN strategies for inversion of controlled-source EM responses in frequency and time domain. Manoj and Nagarajan ( 2003 ) and Conway et al. ( 2019 ) also effectively employed ANN for processing time-series of MT data. ANN technologies have been also applied for imaging and inversion of borehole resistivity measurements Shahriari et al. ( 2020b , 2020a ); Zhu et al. ( 2020 ). None of these works accounts for the presence of metallic structures in the modeling space.

Alternatively, Wan et al. ( 2021 ) develops a robust multi-layer perceptron for the detection of underground metal objects that works in combination with the kernel principal component analysis method for data dimensionality reduction. This network presents only one hidden layer with 50 neurons and employs the limited-memory Broyden–Fletcher–Goldfarb–Shanno algorithm for weight optimization. Li and Yang ( 2021 ) present a deep CNN to model fluid distribution in hydraulic fracturing scenarios that include steel-cased wells. This network results suitable for real-time predictions and behave reliably for data with ambient noise and casing conductivity inaccuracies. The synthetic training and validation dataset presents 30K samples, and the total number of network weights is close to 3.1 million. The optimization algorithm for weight estimations is a stochastic gradient descent.

Lastly, the following works provide ANN-based solutions with a high potential for the detection of buried metallic structures. Chiu et al. ( 2023 ) propose a deep CNN that processes measurements of the scattered field for accurate form reconstruction of objects with different shapes. This deep CNN has been applied to some synthetic tests in the presence of low noisy data. The loss training function is the mean square error, and the activation function is the rectified linear unit (ReLU). Ozkaya and Seyfi ( 2018 ) develop a deep dictionary learning method, with an adjustable number of hidden layers, able to apply different classification algorithms and achieve high detection performance in ground penetrating radar (GPR) applications. For training and testing, a database of 180 GPR synthetic images including objects with different geometries made of five different materials. Panda et al. ( 2016 ) present a ANN for detection of delamination/voids and metal bars embedded in buried concrete structures for health monitoring applications. The model corresponds to a three-layered feed-forward ANN where the input, hidden, and output layer presents 70, 30, and 10 neurons, respectively. Network training employs a synthetic dataset and the Levenberg–Marquard algorithm for weight optimization. It also employs a cross-entropy activation function with an L2-regularization term for over-fitting reduction.

4 Configurations and Applications

In the 1980s and 1990s, during the development of logging measurements, many holes were cased with metallic casing, and concern over its effects on EM measurements pushed for analytical and later numerical studies, as well as laboratory experiments (Wu and Habashy 1994 ). The main question was whether EM logging measurements could be used as a tool for reservoir characterization and monitoring, considering the distortion caused by metallic effects. Therefore, nowadays, the presence of metallic structures, particularly metallic casing, is seen as an opportunity to improve measurements rather than causing noise or distortion. Numerous simulations, using analytical and numerical approaches, have shown how deep targets can be characterized and monitored using active EM geophysical techniques due to the presence of pipes and metallic casing. In this context, Table  1 provides an overview of codes for EM modeling and inversion in the presence of metallic structures.

Summarizing different configurations is complex due to the vast number of combinations of arrays, tools, and setups. While there is a considerable amount of numerical simulation work (Commer et al. 2015 ; Tang et al. 2015 ; Um et al. 2015 ; Vilamajó et al. 2015 , 2016 ; Cuevas and Pezzoli 2018 ; Shahriari et al. 2020a ; Um et al. 2020 ; Castillo-Reyes et al. 2021 ; Shahriari et al. 2021 ; Heagy and Oldenburg 2022 ; Castillo-Reyes et al. 2023 ), there are relatively few studies reporting real or experimental data (Tietze et al. 2015 ; Vilamajó et al. 2015 ; Puzyrev et al. 2017 ; Orujov et al. 2020 ; Wilt et al. 2020 ; Castillo-Reyes et al. 2021 ). Figure  2 outlines the possible configurations of the source with respect to the metallic structure and target in the subsoil. Typically, grounded sources are used to take advantage of the metal properties, both in on shore context and in marine one, where the sources are towed thought the water near the sea floor and onshore contexts. Common configurations include the use of horizontal electrical dipoles (HED) ( \(T_{x1}\) at the surface seabed or land, and \(T_{x2}\) when one pole of the dipole is connected to the casing (Streich and Swidinsky 2023 ), and vertical electrical dipoles (VED) ( \(T_{z1}\) inside the casing but not in contact with it, or \(T_{z2}\) as a deep source at the bottom of the casing and without contact with it). Inductive sources, such as the vertical magnetic dipole (VMD) or horizontal magnetic dipole, are also considered, particularly when dealing with sources within the pipe. Similarly, the receivers, typically electric passive dipoles for measuring the electric field or coils for measuring the magnetic field, can be placed in equivalent positions. For practical and technical reasons, surface profiles (radially centered in the well or metallic structure, or inline) are commonly used to obtain the fields at different offsets.

figure 2

Overview of possible source configurations in a casing or metallic structures environment. \(\rho _{i}\) represents the electric resistivity/conductivity of each material. The target can be a fault, a reservoir, a CO \(_2\) deposit, or whatever one wishes to characterize at depth. The background formation can be varied, typically semi-stratified. Furthermore, the VED may either located inside or at the bottom, ensuring that they remain entirely isolated from direct contact with the metal casing. The VED are positioned inside ( \(T_{z1}\) ) or at the bottom ( \(T_{z2}\) ) of the casing but is kept isolated from direct contact with the metallic structure

The selection of frequency range and mode of operation is crucial for each configuration. Transmitters for the sources can operate in DC (resistivity method), low frequencies (less than 10 Hz), or high frequencies (higher than 100 Hz), each with different penetration depths and consequently, varying resolution, sensitivity, and complexity. Choosing between time domain, where the transmitter operates using step-off waveforms, or frequency domain, where the transmitter operates using continuous periodic forms, is also an important decision, each with its own advantages and disadvantages. Although, theoretically, working in either domain should be equivalent due to the Fourier transform relationship between them, practical implementation, including measurements, data processing, and inversion, often reveals differences (Mörbe et al. 2020 ). Typically, time-domain measurements may offer a broader depth range if the equipment has a wide dynamic range, but they may also suffer from higher levels of environmental EM noise. Conversely, frequency-domain measurements generally exhibit greater lateral sensitivity and resolution, particularly when the frequency range of interest is well-defined. It is noteworthy that contemporary equipment capabilities, as well as processing and inversion tools in both domains, are highly robust. Therefore, the choice between time and frequency domains ultimately depends on the available tools and the specific properties of the exploration target (Streich 2016 ).

The DC configuration is notable for being pioneering and facilitating analytical approaches (Kaufman 1990 ; Kaufman and Wightman 1993 ). Theoretical studies (analytical, semi-analytical, or numerical) are commonly performed in the time domain as it provides a more intuitive way to observe the EM field at early, transition, and late times. Frequency domain simulations and real data are more frequently used for realistic simulations.

It is worth noting that there are concerns regarding the repeatability of EM measurements in the context of monitoring or time-lapse EM. These concerns stem from potential errors in the range of the measured changes in the EM field, as discussed in studies by Orange et al. ( 2009 ) and Streich ( 2016 ). This issue becomes particularly relevant when considering the improved signal-to-noise ratios achieved in borehole-to-surface field experiments.

From a physical perspective, the strong contrast in electric and magnetic properties between metallic infrastructures (such as casings or pipes) and geological materials (with electrical conductivity contrasts of up to five orders of magnitude and magnetic permeability contrasts typically of two orders of magnitude) results in two superimposed phenomena: galvanic and inductive effects. Galvanic effects correspond to changes in charge density at the boundaries and induced currents channeled along the metallic structures. These effects are more significant when active dipoles are located in close proximity or even inside the structure (e.g., inside the well) and when the source (active dipoles) is at the bottom of a metallic casing and very close to it.

Typically, a metallic casing is simulated as a long electric source or a set of vertical or horizontal dipoles, functioning as an antenna (Kaufman 1990 ; Schenkel and Morrison 1990 ; Kong et al. 2009 ; Cuevas 2014 ). This antenna has a strong effect that can be advantageous or disadvantageous depending on the target. The metallic casing can increase the EM signal-to-noise ratio and help illuminate deep structures or resistivity anomalies associated with the presence or displacement of a CO \(_2\) bubble (Um et al. 2015 ) or fluids (Colombo et al. 2018 ), depending on the specific study context. Several studies consider different values for the electrical conductivities of metallic or stainless-steel casings, as well as their length, thickness, and even internal structure. The most sensitive parameters are the length and inner-outer radius of the casing, along with the conductivity contrast between the casing and the geological formation in contact with it. Figure  3 shows a simple model illustrating the antenna effect corresponding to a 200-m-long metallic casing. The source, a VED, is located at \(z=-204\) m (4 m below the casing). It demonstrates how the responses are affected compared to what would be produced by the same dipole at \(z=-2\) m without casing.

figure 3

Horizontal electric field amplitude \(|E_x|\) for a simple model with a metallic casing, where the VED ( \(T_z\) ) is located 4 m below the casing. The length of the casing is 200 m, and the background is a homogeneous medium with a resistivity of 20 \(\Omega \,\) m. For comparison, the solid line corresponds to responses without casing, but with the VED ( \(T_z\) ) positioned very shallow at 2 m depth. In both cases, a frequency of emission of 2 Hz was used. These responses were simulated using the PETGEM code (Castillo-Reyes et al. 2018 )

Furthermore, to address key practical questions about the behavior of EM fields distorted by the casing effect (Puzyrev et al. 2017 ) conducted 3D frequency-domain EM modeling considering the casing effect and investigated its applicability to the borehole-to-surface configuration of the Hontomín CO \(_2\) storage site. The simulation results confirm that borehole-to-surface EM tools are sensitive to resistive targets located not too far away from the source in the presence of steel-cased wells. For clarity and illustrative purposes, Fig.  4 presents the original one by Puzyrev et al. ( 2017 ), depicting the ratios of the amplitudes of the horizontal electric field for different positions of the small CO \(_2\) plume.

figure 4

Ratios of amplitudes of horizontal electric field for different frequencies and various positions of a small CO \(_2\) pilot plume, as investigated by Puzyrev et al. ( 2017 ). The size of the plume is 185 x 185 x 14 m. Its bottom is located at \(1\,470\) m, and its top touches the tubing at \(1\,456\) m. The VED source is positioned at a depth of \(1\,480\) m, 10 m below the target. It has a homogeneous saturation of 50%, resulting in a post-injection to preinjection resistivity contrast of 4

Further aspects include unexploded ordnance (UXO) detection and similar tasks where the geometry and precise locations of potential targets are unknown. In these situations, it is particularly challenging to identify and locate UXO or similar hazardous objects, which may be buried underground or hidden in various terrains. Traditionally, these surveys adopt a mapping approach, which often involves systematic scanning of the area to map out anomalies or areas of interest. This approach is commonly used in techniques like airborne time-domain electromagnetic (TEM) or helicopter electromagnetic (HEM) surveys. In such surveys, EM sensors are used to measure the electrical conductivity of the subsurface, and variations in these measurements may indicate the presence of buried metallic objects like UXO. However, the inherent uncertainty regarding the size, shape, and depth of potential targets makes detection and characterization challenging. To address this, machine learning (ML) approaches have been increasingly applied to enhance data interpretation (Heagy et al. 2020 ). These ML techniques leverage the available data to develop models that can better distinguish between natural geological anomalies and potential hazardous objects. They can also help estimate the location and properties of the detected targets more accurately, aiding in the safe and efficient removal or neutralization of UXO and reducing potential risks to human safety.

Inductive effects have been less studied. They arise when the metallic structures also exhibit magnetic properties, resulting in small variations in the field and can be considered as time-varying secondary sources (Cuevas and Pezzoli 2018 ). Recently, Heagy and Oldenburg ( 2023 ) extended the study and demonstrated cases in which the magnetic effects can be more significant. This work provides an excellent examination of the relationship between currents and magnetic fields in the casing for a simple model. However, as these authors point out, further studies are necessary to explore how to incorporate magnetic permeability into the modeling and subsequent inversions. Moreover, some authors suggest that induced polarization (IP), widely utilized in mining due to its sensitivity to metals, can produce effects in EM data (Holladay and West 1984 ; Mulder 2006 ; Kang and Oldenburg 2016 ). However, there is a scarcity of research at the intersection of IP effects and EM modeling and imaging in the presence of metallic artifacts. Although cited works provide valuable insights, a research gap remains in this area.

5 Discussion

Once insights behind EM modeling and imaging in the presence of metallic artifacts, development of EM modeling and imaging algorithms, and applications and configurations were studied, in this section, we discuss recommendations for EM modeling and imaging in the presence of metallic structures. Additionally, we outline a comprehensive future development agenda, emphasizing the need for advancements in software tools and addressing geological complexities. Through these discussions, we aim to provide valuable insights for researchers and encourage the development of a robust technological ecosystem to satisfy application needs.

5.1 Tailoring Strategies to Application Needs

After examining the main points raised in this review, one can see that it is complex to judge which is the best modeling strategy, due to different applications have different requirements. However, preferable modeling strategies can be employed for models that contain similar features as the presented ones:

Numerical method. When modeling EM fields around metallic structures, it is important to choose numerical methods that can accurately capture the complex behavior near conductive materials. FD is suitable for EM imaging, with straightforward implementation and efficient on vector computing architectures. However, unable to handle unstructured grids, requiring stair-case gridding for complex geometries. FV is also suitable for EM imaging, discretizing Maxwell’s equations with a straightforward formulation. It can be applied to unstructured meshes, enabling representation of complex geological bodies. On the other hand, the IE method can be efficient for forward modeling as it meshes only scattering regions, saving computational resources. However, IE formulations require simple background resistivity models, limiting its applicability in 3D EM imaging in the presence of metallic structures. Finally, the FE method provides straightforward and reliable numerical formulations for solving the EM problem. Its utilization of unstructured FE meshes offers the flexibility to effectively handle small metallic structures and accurately represent intricate geometries, all while avoiding a substantial increase in problem size. Since each method has its strengths and limitations when modeling EM phenomena with metallic structures, in choosing the numerical method, we must consider the specific problem requirements, geometry complexity, and available computational resources.

Meshing. Proper meshing is crucial for accurate and efficient EM modeling, especially in the presence of metallic structures. Structured meshes, such as Cartesian grids (e.g., FD schemes), can be advantageous when the geometry is relatively regular. They offer simplicity and ease of implementation. However, unstructured meshes, such as triangular or tetrahedral meshes (e.g., FV and FE), are more flexible and can better represent complex geometries and irregular structures. In the vicinity of metallic structures, it may be necessary to refine the mesh to capture the EM fields accurately. Here, the use of tailored meshing is highly recommended.

Solver. The choice of solvers can significantly impact the computational efficiency and accuracy of EM modeling. IS are often preferred for large-scale EM modeling with metallic structures due to their lower memory requirements and better scalability on parallel computers. However, they can suffer from poor convergence when dealing with ill-conditioned sparse matrices. To improve convergence, ad hoc preconditioning techniques like Jacobian and successive over-relaxation can be employed. DS provide a direct solution to the LSE in EM modeling and offer numerical stability. They are suitable for handling multiple source scenarios efficiently but can be computationally expensive, especially for large-scale problems, due to memory and computational requirements. However, DS gained popularity for EM imaging with metallic structures due to numerical advantages and modern parallel computing availability.

Parallel computing and AI schemes: To tackle the computational demands of large-scale EM modeling, parallel computing and AI schemes can be employed. Parallel computing techniques, such as domain decomposition, allow distributing the computational workload across multiple processors or computing nodes. This can significantly speed up the simulations and enable the handling of larger models. Additionally, AI techniques, such as ANNs, can be utilized to accelerate the modeling process. ANNs can learn the mapping between input parameters and EM responses, enabling fast predictions and reducing the computational burden associated with inversion or optimization tasks.

By combining appropriate numerical methods, meshing strategies, solvers, and leveraging HPC and AI schemes, EM modeling in the presence of metallic structures can be more accurate, efficient, and scalable. However, it is important to carefully assess the specific requirements of the problem at hand and choose the techniques that best suit the complexity and scale of the application.

5.2 Future Challenges

EM field simulation techniques in the presence of metallic structures have been developed to solve different problems in complex geometry models with realistic physical parameters (e.g., high-resistivity contrasts), differing in numerical accuracy and computational speed. Despite this effort, a substantial agenda exists for EM imaging in the presence of metallic artifacts. Such progress must address in:

Advancements in modeling and inverse EM problems. One significant challenge on the horizon in the field of EM modeling and imaging involves the development of methods capable of accommodating variable permeability. While notable progress has been achieved in addressing thin, highly conductive features, as exemplified by Weiss et al. ( 2016 ) in discretizing the product of conductivity and cross-sectional area along cell edges, this approach does not readily extend to accounting for variations in magnetic permeability. As emphasized by Weiss et al. ( 2016 ) and (Weiss 2017 ), and subsequently demonstrated by Heagy and Oldenburg ( 2023 ) and others, magnetic permeability can exert a substantial influence on EM data. Effectively integrating variable permeability into EM modeling and inversion techniques represents a promising area for further exploration. Another pressing challenge revolves around refining upscaling techniques and modeling strategies for accurately representing thin, highly conductive structures within subsurface models. Despite notable progress, there remains ample room for developing more comprehensive solutions to address these features accurately. Furthermore, future research should prioritize the development of practical inversion strategies capable of efficiently and accurately reconstructing subsurface properties from EM data. While considerable efforts have been directed toward modeling to attain accurate EM responses, there is ample room for improvement in the realm of inversion. Some strategies developed to reduce computational requirements have yielded satisfactory results (Cuevas 2021 ; Orujov et al. 2022a ), indicating that there is a path forward in inversion research. These strategies should harness the capabilities of present and near-future computational architectures, such as exascale computing, to meet the growing demands of EM modeling and inversion tasks. Additionally, there is a need to emphasize time-lapse inversion techniques, especially in applications involving dynamic subsurface processes. Finally, it is imperative to explore a wide array of applications in the realm of EM imaging. Beyond monitoring subsurface fluid reservoirs, there is a burgeoning interest in locating and characterizing orphaned and abandoned wells. This shift highlights the urgency of developing advanced EM techniques to address the environmental and safety concerns associated with these neglected well sites.

Developing suitable test beds for 3D EM modeling and imaging that are benchmarks of different application contexts. While performing a 3D EM inversion of contaminated casing data may not be the most effective approach, conducting a thorough 3D EM modeling of the metallic structure is paramount. This step aids in comprehending the physical behavior of EM scattered fields and potentially mitigating their impact on real data. Furthermore, incorporating sensitivity studies into the modeling process further enhances our understanding and facilitates the removal of unwanted effects. Previous studies (e.g., Bøe et al. ( 2017 ) and Morten et al. ( 2017 ), both examining pipelines with real CSEM data) have demonstrated various strategies for identifying and correcting inherent effects within the data. These methods typically involve filtering or modifying the affected data prior to inversion. For instance, Orujov et al. ( 2022a ) conducted a CSEM experiment with data contaminated by metal well effects, comparing inversion results with and without casing. These studies provide valuable insights for developing a comprehensive data bank.

Developing even more robust EM workflows. The presence of metallic structures presents unique challenges, necessitating specialized modeling and imaging algorithms that account for interactions between EM fields and metallic materials in real-world scenarios with high accuracy and reliability. Addressing these challenges requires additional effort to explore and validate innovative approaches, such as DL-based and exascale HPC-enabled solutions for EM modeling and imaging. This progress could address four key aspects. First, it can solve the initial problem of establishing complete EM data for DL-based solutions (Puzyrev 2019 ). Second, while coupled physics-DL approaches can mitigate the severe dependence on data to some extent, the generalization of these DL-based EM schemes is widely questioned due to data dependency. Therefore, further research on the portability of trained DL models needs to be developed (Puzyrev 2019 ; Puzyrev and Swidinsky 2021 ). The third aspect should focus on DL-based solutions for multi-physics imaging, thus extending their applicability to complex and untested setups. Finally, increasing the maturity and democratization of exascale HPC-enabled EM workflows is essential for handling massive datasets with accuracy and computational efficiency. Analyzing emerging technologies and their potential, such as quantum computing (Piattini et al. 2021 ), is critical for the near future.

Strengthening multidisciplinary research . This will encourage us further to advance our knowledge and interpretation ability of EM fields when metallic structures are presented. Although individual studies quantifying aspects of the EM field footprint are valuable in their own respect, the largest advances will be made by taking interdisciplinary approaches (geology, geophysics, EM engineering, mathematics, computer science, and data science) to develop the concepts behind EM imaging. The multi- and cross-disciplinary research should focus on obtaining better-resolved EM responses in scenarios incorporating multiple and even more realistic metallic structures, full electrical anisotropy, and IP at outer structure surface, among others.

Reviewing the developments of the past decade in EM modeling and inverse applications around metallic wells, we observe notable progress in methodologies and computational capabilities. However, significant challenges persist, particularly in enhancing target illumination around well casings. These hurdles are compounded by the complexities of subsurface environments, resource limitations, and the indispensable requirement for interdisciplinary collaboration. Additionally, technical issues like casing geometry continue to present ongoing challenges.

To establish the routine application of EM techniques around well casings, it is imperative to confront these multifaceted issues. This endeavor necessitates the advancement of modeling techniques, the seamless integration of diverse data types, substantial resource investments (equipment and computing), and a resolute commitment to environmental and safety considerations. Through these concerted efforts, we unlock a future marked by an enhanced understanding of the subsurface and sustainable resource management.

6 Conclusions

In this paper, we provide a comprehensive review of geo-electromagnetic modeling and imaging solutions in the presence of metallic structures. Our analysis framework encompasses the study of three aspects: physics behind metallic structures in EM modeling and imaging, development of computational tools (conventional strategies and artificial intelligence schemes), and configurations and applications.

We begin by discussing key insights regarding the impact of metallic structures on EM imaging. Next, we delve into a detailed analysis of the four most widely employed numerical methods in EM modeling and imaging: the FD, FV, IE, and FE methods. We also examine the role of meshing technologies in the numerical study of EM fields, considering their implications for accurate representation of complex geometries and small metallic structures. Furthermore, we explore modern computational techniques that address the challenges of solving current and next-generation geo-electromagnetic problems. This includes a discussion on LSE solvers, parallel computing strategies, and the integration of AI methods in EM modeling and imaging workflows. Additionally, we present an in-depth analysis of various configurations and applications within the context of EM modeling and imaging in the presence of metallic structures.

Our analysis primarily centers on vertical metal casings. However, we broaden our discussion to include other metallic infrastructures, recognizing that the conclusions drawn from this review are broadly applicable to these additional structures. The types of metallic structures present in the area where EM surveys are conducted can be quite diverse. The most common ones are wells (with metallic casing) and pipelines, both of which we have included in this review. Although they have different geometric characteristics (pipelines typically being horizontal and potentially compromising a lot of data, while wells are more local and deeper), the challenges and modeling strategies remain the same: Significant property contrast between the metallic structure and the surrounding rock necessitates refinement of meshes, while simultaneously dominating data on a much larger scale. Wells are of particular interest as they enable the illumination of deep structures considering sources at depth and allow for reservoir monitoring and tracking. Regarding monitoring, one might wonder if, when conducting time-lapse measurements (in the presence of any metallic structure), the effect of the structure remains minimal as changes in the data are considered. According to numerical simulations by Orujov et al. ( 2022b ), casing effects are fully eliminated by subtracting time-lapse data and such infrastructure must be fully incorporated into forward models for time-lapse EM inversion. A very different problem arises when the location of the structure is unknown (as in the case of UXO or pipelines), and therefore cannot be modeled. In such cases, as mentioned earlier, strategies based on AI or ML must be employed, and there is much work to be done.

We identify the lack of standardized methodology for data acquisition, processing, and interpretation as the main limitation of this literature review. The variability in approaches and techniques across different studies makes it challenging to compare and generalize results. Furthermore, limited information on the accuracy and reliability of the models used adds complexity to the evaluation of methodologies. However, despite these challenges, this review provides valuable insights into the current state, challenges, and future directions of computational technologies for EM wavefield modeling and subsurface recovery in the presence of metallic structures. We anticipate that this review will foster interdisciplinary collaboration among physics, geophysics, mathematics, and computer science disciplines, enabling the rational design and reproducible construction of geological models in realistic applications.

Alumbaugh DL, Newman GA, Prevost L, Shadid JN (1996) Three-dimensional wideband electromagnetic modeling on massively parallel computers. Radio Sci 31(1):1–23

Article   Google Scholar  

Amestoy P, Brossier R, Buttari A, L’Excellent J-Y, Mary T, Métivier L, Miniussi A, Operto S (2016) Fast 3D frequency-domain full-waveform inversion with a parallel block low-rank multifrontal direct solver: application to OBC data from the North Sea3D FD FWI with BLR direct solver. Geophysics 81(6):R363–R383

Anderson EC (2019) The effects of conductive well casings on electromagnetic surveys: experimental studies and numerical modelling, Colorado School of Mines

Araya-Polo M, Farris S, Florez M (2019) Deep learning-driven velocity model building workflow. Lead Edge 38(11):872a1-872a9

Ashena R, Thonhauser G (2015) Application of artificial neural networks in geoscience and petroleum industry. Artif Intell Approach Pet Geosci 127–166

Avdeev DB (2005) Three-dimensional electromagnetic modelling and inversion from theory to application. Surv Geophys 26(6):767–799

Avdeev DB, Kuvshinov AV, Pankratov OV, Newman GA (2002) Three-dimensional induction logging problems, part I: an integral equation solution and model comparisons. Geophysics 67(2):413–426

Axelsson O (1996) Iterative solution methods. Cambridge University Press, Cambridge

Google Scholar  

Baddari K, Aïfa T, Djarfour N, Ferahtia J (2009) Application of a radial basis function artificial neural network to seismic data inversion. Comput Geosci 35(12):2338–2344

Balay S, Abhyankar S, Adams M, Brown J, Brune P, Buschelman K, Dalcin L, Dener A, Eijkhout V, Gropp W et al (2019) PETSc users manual

Biswas R, Sen MK, Das V, Mukerji T (2019) Prestack and poststack inversion using a physics-guided convolutional neural network. Interpretation 7(3):SE161–SE174

Bøe L, Park J, Sauvin G, Vöge M (2017) Improvement of resistivity imaging for an offshore CO \(_2\) storage by filtering out seabed pipeline influence. In: EAGE/SEG Research Workshop 2017, cp–522, European Association of Geoscientists & Engineers

Börner R-U (2010) Numerical modelling in geo-electromagnetics: advances and challenges. Surv Geophys 31(2):225–245

Burnett DS (1987) Finite element analysis: from concepts to applications. Prentice Hall

Campanyà J, Ledo J, Queralt P, Marcuello A, Liesa M, Muñoz JA (2012) New geoelectrical characterisation of a continental collision zone in the west-central pyrenees: constraints from long period and broadband magnetotellurics. Earth Planet Sci Lett 333:112–121

Castillo-Reyes O, de la Puente J, Cela JM (2018) PETGEM: a parallel code for 3D CSEM forward modeling using edge finite elements. Comput Geosci 119:126–136. https://doi.org/10.1016/j.cageo.2018.07.005

Article   CAS   Google Scholar  

Castillo-Reyes O, de la Puente J, García-Castillo LE, Cela JM (2019) Parallel 3D marine controlled-source electromagnetic modeling using high-order tetrahedral nédélec elements. Geophys J Int 219:39–65. https://doi.org/10.1093/gji/ggz285

Castillo-Reyes O, Queralt P, Marcuello A, Ledo J (2021) Land CSEM simulations and experimental test using metallic casing in a geothermal exploration context: Vallès basin (NE spain) Case Study. IEEE Trans Geosci Remote Sens. https://doi.org/10.1109/TGRS.2021.3069042

Castillo-Reyes O, Amor-Martin A, Botella A, Anquez P, García-Castillo LE (2022) Tailored meshing for parallel 3D electromagnetic modeling using high-order edge elements. J Comput Sci 63:101813. https://doi.org/10.1016/j.jocs.2022.101813

Castillo-Reyes O, Modesto D, Queralt P, Marcuello A, Ledo J, Amor-Martin A, de la Puente J, García-Castillo LE (2022) 3D magnetotelluric modeling using high-order tetrahedral nédélec elements on massively parallel computing platforms. Comput Geosci 160:105030. https://doi.org/10.1016/j.cageo.2021.105030

Castillo-Reyes O, Rulff P, Schankee Um E, Amor-Martin A (2023) Meshing strategies for 3D geo-electromagnetic modeling in the presence of metallic infrastructure. Comput Geosci. https://doi.org/10.1007/s10596-023-10247-w

Chambers JE, Kuras O, Meldrum PI, Ogilvy RD, Hollands J (2006) Electrical resistivity tomography applied to geologic, hydrogeologic, and engineering investigations at a former waste-disposal site. Geophysics 71(6):B231–B239

Chang P-Y, Chang L-C, Hsu S-Y, Tsai J-P, Chen W-F (2017) Estimating the hydrogeological parameters of an unconfined aquifer with the time-lapse resistivity-imaging method during pumping tests: case studies at the Pengtsuo and Dajou sites, Taiwan. J Appl Geophys 144:134–143

Chen J, Schäfer F, Huang J, Desbrun M (2021) Multiscale cholesky preconditioning for ill-conditioned problems. ACM Trans Graph (TOG) 40(4):1–13

Chiu C-C, Chien W, Yu K-X, Chen P-H, Lim EH (2023) Electromagnetic imaging for buried conductors using deep convolutional neural networks. Appl Sci 13(11)

Clemens M, Weiland T (2001) Discrete electromagnetism with the finite integration technique. Prog Electromagn Res 32:65–87

Coggon J (1971) Electromagnetic and electrical modeling by the finite element method. Geophysics 36(1):132–155

Colombo D, McNeice GW (2013) Quantifying surface-to-reservoir electromagnetics for waterflood monitoring in a Saudi Arabian carbonate reservoir. Geophysics 78(6):E281–E297

Colombo D, McNeice G, Cuevas N, Pezzoli M (2018) Surface to borehole electromagnetics for 3D waterflood monitoring: results from first field deployment. In: SPE annual technical conference and exhibition OnePetro

Commer M (2011) Three-dimensional gravity modelling and focusing inversion using rectangular meshes. Geophys Prospect 59(Modelling methods for geophysical imaging: trends and perspectives) 966–979

Commer M, Hoversten GM, Um ES (2015) Transient-electromagnetic finite-difference time-domain earth modeling over steel infrastructure. Geophysics 80(2):E147–E162

Constable S (2006) Marine electromagnetic methods-a new tool for offshore exploration. Lead Edge 25(4):438–444

Constable S (2010) Ten years of marine CSEM for hydrocarbon exploration. Geophysics 75(5):75A67–75A81

Conway D, Alexander B, King M, Heinson G, Kee Y (2019) Inverting magnetotelluric responses in a three-dimensional earth using fast forward approximations based on artificial neural networks. Comput Geosci 127:44–52

Coppo N, Darnet M, Harcouet-Menou V, Wawrzyniak P, Manzella A, Bretaudeau F, Romano G, Lagrou D, Girard J-F (2016) Characterization of deep geothermal energy resources in low enthalpy sedimentary basins in Belgium using electro-magnetic methods–CSEM and MT results. In: European Geothermal Congress 2016

Cuevas NH (2014) Analytical solutions of EM fields due to a dipolar source inside an infinite casing. Geophysics 79(5):E231–E241

Cuevas NH (2021) An approximate inversion scheme for surface-borehole electromagnetic in the presence of steel casing: 1D implementation. Geophysics 86(2):E111–E121

Cuevas NH (2022) Insights on electromagnetic scattering by steel casings in surface-to-borehole and borehole-to-surface methods. Lead Edge 41(2):93–99

Cuevas NH (2024) Insights on electromagnetic field distribution due to a vertical electric dipole source inside an infinite steel casing. Geophysics 89(2):E47–E59

Cuevas NH, Pezzoli M (2018) On the effect of the metal casing in surface-borehole electromagnetic methods. Geophysics 83(3):E173–E187

da Silva NV, Morgan JV, MacGregor L, Warner M (2012) A finite element multifrontal method for 3D CSEM modeling in the frequency domain. Geophysics 77(2):E101–E115

Dagostini JI, da Silva H CP, Pinto VG, Velho RM, Gastal ES, Schnorr LM (2021) Improving workload balance of a marine CSEM inversion application. In: 2021 IEEE international parallel and distributed processing symposium workshops (IPDPSW), pp 704–713. IEEE

Das V, Pollack A, Wollner U, Mukerji T (2019) Convolutional neural network for seismic impedance inversion CNN for seismic impedance inversion. Geophysics 84(6):R869–R880

Davis TA (2004) UMFPACK V4.3—an unsymmetric-pattern multifrontal method. ACM Trans Math Softw (TOMS) 30(2):196–199

Davydycheva S, Druskin V, Habashy T (2003) An efficient finite-difference scheme for electromagnetic logging in 3D anisotropic inhomogeneous media. Geophysics 68(5):1525–1536

Demirciİ (2022) 3-D modeling of airborne and land-based controlled-source electromagnetic data: comparison on CPU and GPU platform 2022(1):1–5

Di H, Li Z, Maniar H, Abubakar A (2020) Seismic stratigraphy interpretation by deep convolutional neural networks: a semisupervised workflow. Geophysics 85(4):WA77–WA86

Dmitriev V (1969) Electromagnetic fields in inhomogeneous media. Moscow State University

Druskin V, Knizhnerman L (1994) Spectral approach to solving three-dimensional Maxwell’s diffusion equations in the time and frequency domains. Radio Sci 29(4):937–953

Du Z, MacGregor LM (2010) Reservoir characterization from joint inversion of marine CSEM and seismic AVA data using genetic algorithms: a case study based on the Luva Gas field, in SEG Technical Program Expanded Abstracts 2010, pp 737–741. Society of Exploration Geophysicists

Duffy D (2001) Green’s functions with applications. CRC Press, Applied Mathematics

Eidesmo T, Ellingsrud S, MacGregor L, Constable S, Sinha M, Johansen S, Kong F, Westerdahl H (2002) Sea bed logging (SBL), a new method for remote and direct identification of hydrocarbon filled layers in deepwater areas. First Break 20(3):144–152

Eidsvik J, Bhattacharjya D, Mukerji T (2008) Value of information of seismic amplitude and CSEM resistivity. Geophysics 73(4):R59–R69

Elías MW, Zyserman FI, Rosas-Carbajal M, Manassero MC (2022) Three-dimensional modelling of controlled source electro-magnetic surveys using non-conforming finite element methods. Geophys J Int 229(2):1133–1151

Gandi O (1998) Advances in computational electrodynamics-the finite-difference time-domain method, Taflove, Ed., (Artech House, Boston)

Gillman A, Barnett A (2013) A fast direct solver for quasi-periodic scattering problems. J Comput Phys 248:309–322

Girard J-F, Coppo N, Rohmer J, Bourgeois B, Naudet V, Schmidt-Hattenberger C (2011) Time-lapse CSEM monitoring of the Ketzin (Germany) \(\text{ CO}_{2}\) injection using 2 \(\times \) MAM configuration. Energy Procedia 4:3322–3329

Grayver AV, Bürg M (2014) Robust and scalable 3-d geo-electromagnetic modelling approach using the finite element method. Geophys J Int 198(1):110–125

Grayver AV, Kolev TV (2015) Large-scale 3D geoelectromagnetic modeling using parallel adaptive high-order finite element method. Geophysics 80(6):E277–E291

Grayver AV, Streich R, Ritter O (2013) Three-dimensional parallel distributed inversion of CSEM data using a direct forward solver. Geophys J Int 193(3):1432–1446

Guo Z, Egbert G, Dong H, Wei W (2020) Modular finite volume approach for 3D magnetotelluric modeling of the Earth medium with general anisotropy. Phys Earth Planet Int 309:106585

Gupta A (2000) WSMP: Watson sparse matrix package (Part-I: direct solution of symmetric sparse systems), IBM TJ Watson Research Center, Yorktown Heights, NY. Tech. Rep, RC, p 21886

Haber E, Ascher UM (2001) Fast finite volume simulation of 3D electromagnetic problems with highly discontinuous coefficients. SIAM J Sci Comput 22(6):1943–1961

Haber E, Heldmann S (2007) An octree multigrid method for quasi-static Maxwell’s equations with highly discontinuous coefficients. J Comput Phys 223(2):783–796

Haber E, Ascher U, Aruliah D, Oldenburg D (2000) Fast simulation of 3D electromagnetic problems using potentials. J Comput Phys 163(1):150–171

Haber E, Schwarzbach C, Shekhtman R (2016) Modeling electromagnetic fields in the presence of casing, in SEG Technical Program Expanded Abstracts 2016, pp 959–964, Society of Exploration Geophysicists

Hansen KR, Mittet R (2009) Incorporating seismic horizons in inversion of CSEM data, in SEG Technical Program Expanded Abstracts 2009, pp 694–698, Society of Exploration Geophysicists

Harris P, MacGregor L (2006) Determination of reservoir properties from the integration of CSEM, seismic, and well-log data. First Break 24(11)

Harris P, Du Z, MacGregor L, Olsen W, Shu R, Cooper R (2009) Joint interpretation of seismic and CSEM data using well log constraints: an example from the Luva field. First Break 27(5)

Heagy LJ, Oldenburg DW (2019) Modeling electromagnetics on cylindrical meshes with applications to steel-cased wells. Comput Geosci 125:115–130

Heagy LJ, Oldenburg DW (2019) Direct current resistivity with steel-cased wells. Geophys J Int 219(1):1–26

Heagy LJ, Oldenburg DW (2022) Electrical and electromagnetic responses over steel-cased wells. Lead Edge 41(2):83–92

Heagy LJ, Oldenburg DW (2023) Impacts of magnetic permeability on electromagnetic data collected in settings with steel-cased wells. Geophys J Int 234(2):1092–1110

Heagy LJ, Cockett R, Kang S, Rosenkjaer GK, Oldenburg DW (2017) A framework for simulation and inversion in electromagnetics. Comput Geosci 107:1–19

Heagy LJ, Oldenburg DW, Pérez F, Beran L (2020) Machine learning for the classification of unexploded ordnance (UXO) from electromagnetic data. In: SEG international exposition and annual meeting, p D031S068R005, SEG

Helsing J, Karlsson A, Rosén A (2022) An efficient full-wave solver for eddy currents. Comput Math Appl 128:145–162

Hénon P, Ramet P, Roman J (2002) PaStiX: a high-performance parallel direct solver for sparse symmetric positive definite systems. Parallel Comput 28(2):301–321

Hermeline F (2009) A finite volume method for approximating 3D diffusion operators on general meshes. J Comput Phys 228(16):5763–5786

Hohmann GW (1971) Electromagnetic scattering by conductors in the earth near a line source of current. Geophysics 36(1):101–131

Hohmann GW (1975) Three-dimensional induced polarization and electromagnetic modeling. Geophysics 40(2):309–324

Holladay JS, West G (1984) Effect of well casings on surface electrical surveys. Geophysics 49(2):177–188

Holland R (1983) Finite-difference solution of Maxwell’s equations in generalized nonorthogonal coordinates. IEEE Trans Nucl Sci 30(6):4589–4591

Hördt A, Druskin VL, Knizhnerman LA, Strack K-M (1992) Interpretation of 3-D effects in long-offset transient electromagnetic (LOTEM) soundings in the Münsterland area (Germany). Geophysics 57(9):1127–1137

Hördt A, Dautel S, Tezkan B, Thern H (2000) Interpretation of long-offset transient electromagnetic data from the Odenwald area, Germany, using two-dimensional modelling. Geophys J Int 140(3):577–586

Hoversten GM, Commer M, Haber E, Schwarzbach C (2015) Hydro-frac monitoring using ground time-domain electromagnetics. Geophys Prospect 63(6):1508–1526

Hu Y, Yang D (2021) 3D finite volume modeling of steel casings in controlled source electromagnetic surveys using the concept of edge conductivity. In: SEG/AAPG/SEPM First international meeting for applied geoscience & energy, OnePetro

Hue Y-K, Teixeira FL, Martin LS, Bittar MS (2005) Three-dimensional simulation of eccentric LWD tool response in boreholes through dipping formations. IEEE Trans Geosci Remote Sens 43(2):257–268

Iturrarán-Viveros U, Muñoz-García AM, Castillo-Reyes O, Shukla K (2021) Machine learning as a seismic prior velocity model building method for full-waveform inversion: a case study from Colombia. Pure Appl Geophys 178(2):423–448

Jahandari H, Farquharson CG (2014) A finite-volume solution to the geophysical electromagnetic forward problem using unstructured grids. Geophysics 79(6):E287–E302

Jahandari H, Ansari S, Farquharson CG (2017) Comparison between staggered grid finite-volume and edge-based finite-element modelling of geophysical electromagnetic data on unstructured grids. J Appl Geophys 138:185–197

Janaswamy R, Liu Y (1997) An unstaggered colocated finite-difference scheme for solving time-domain Maxwell’s equations in curvilinear coordinates. IEEE Trans Antennas Propag 45(11):1584–1591

Jin J-M (2015) The finite element method in electromagnetics. Wiley, Hoboken

Jin J-M, Zunoubi M, Donepudi KC, Chew WC (1999) Frequency-domain and time-domain finite-element solution of Maxwell’s equations using spectral lanczos decomposition method. Comput Methods Appl Mech Eng 169(3–4):279–296

Kang S, Oldenburg DW (2016) On recovering distributed IP information from inductive source time domain electromagnetic data. Geophys J Int 207(1):174–196

Kaufman AA (1990) The electrical field in a borehole with a casing. Geophysics 55(1):29–38

Kaufman AA, Wightman WE (1993) A transmission-line model for electrical logging through casing. Geophysics 58(12):1739–1747

Key K, Ovall J (2011) A parallel goal-oriented adaptive finite element method for 2.5-D electromagnetic modelling. Geophys J Int 186(1):137–154

Klanica R, Pek J, Hill G (2023) Magnetotelluric power line noise removal using temporally varying sinusoidal subtraction of the grid utility frequency. Pure Appl Geophys 1–15

Kohnke C, Liu L, Streich R, Swidinsky A (2018) A method of moments approach to model the electromagnetic response of multiple steel casings in a layered earth. Geophysics 83(2):WB81–WB96

Koldan J, Puzyrev V, de la Puente J, Houzeaux G, Cela JM (2014) Algebraic multigrid preconditioning within parallel finite-element solvers for 3-D electromagnetic modelling problems in geophysics. Geophys J Int 197(3):1442–1458

Kong F, Roth F, Olsen P, Stalheim S (2009) Casing effects in the sea-to-borehole electromagnetic method. Geophysics 74(5):F77–F87

Ledo J, Queralt P, Martí A, Jones AG (2002) Two-dimensional interpretation of three-dimensional magnetotelluric data: an example of limitations and resolution. Geophys J Int 150(1):127–139

Lee HO, Teixeira FL (2007) Cylindrical FDTD analysis of LWD tools through anisotropic dipping-layered earth media. IEEE Trans Geosci Remote Sens 45(2):383–388

Lee HO, Teixeira FL, San Martin LE, Bittar MS (2011) Numerical modeling of eccentered LWD borehole sensors in dipping and fully anisotropic earth formations. IEEE Trans Geosci Remote Sens 50(3):727–735

Lewis W, Vigh D (2017) Deep learning prior models from seismic images for full-waveform inversion. In: SEG technical program expanded abstracts 2017, pp 1512–1517. Society of Exploration Geophysicists

Li XS (2005) An overview of SuperLU: algorithms, implementation, and user interface. ACM Trans Math Softw (TOMS) 31(3):302–325

Li XS, Demmel JW (2003) SuperLU_DIST: a scalable distributed-memory sparse direct solver for unsymmetric linear systems. ACM Trans Math Softw (TOMS) 29(2):110–140

Li Y, Yang D (2021) Electrical imaging of hydraulic fracturing fluid using steel-cased wells and a deep-learning method. Geophysics 86(4):E315–E332

Mackie RL, Smith JT, Madden TR (1994) Three-dimensional electromagnetic modeling using finite difference equations: the magnetotelluric example. Radio Sci 29(4):923–935

Madsen NK, Ziolkowski RW (1990) A three-dimensional modified finite volume technique for Maxwell’s equations. Electromagnetics 10(1–2):147–161

Manoj C, Nagarajan N (2003) The application of artificial neural networks to magnetotelluric time-series analysis. Geophys J Int 153(2):409–423

Mörbe W, Yogeshwar P, Tezkan B, Hanstein T (2020) Deep exploration using long-offset transient electromagnetics: interpretation of field data in time and frequency domain. Geophys Prospect 68(6):1980–1998

Morten J, Berre L, de Ryhove SdlK, Markhus V (2017) 3D CSEM inversion of data affected by infrastructure. In: 79th EAGE conference and exhibition 2017, vol. 2017, pp 1–5. European Association of Geoscientists & Engineers

Mulder W (2006) A multigrid solver for 3D electromagnetic diffusion. Geophys Prospect 54(5):633–649

Mur G (1991) Finite-element modeling of three-dimensional electromagnetic fields in inhomogeneous media. Radio Sci 26(01):275–280

Newman G, Alumbaugh D (1997) Three-dimensional massively parallel electromagnetic inversion-I. Theory. Geophys J Int 128(2):345–354

Newman GA (2014) A review of high-performance computational strategies for modeling and imaging of electromagnetic induction data. Surv Geophys 35(1):85–100

Newman GA, Alumbaugh DL (2002) Three-dimensional induction logging problems, part 2: a finite-difference solution. Geophysics 67(2):484–491

Nédélec J-C (1980) Mixed finite elements in R3 35(3):315–341

Orange A, Key K, Constable S (2009) The feasibility of reservoir monitoring using time-lapse marine CSEM. Geophysics 74(2):F21–F29

Oristaglio M, Spies B (1999) Three-dimensional electromagnetics. Society of Exploration Geophysicists

Orujov G, Anderson E, Streich R, Swidinsky A (2020) On the electromagnetic response of complex pipeline infrastructure. Geophysics 85(6):E241–E251

Orujov G, Streich R, Swidinsky A (2022) Modeling and inversion of electromagnetic data collected over steel casings: an analysis of two controlled field experiments in Colorado. Lead Edge 41(2):114–121

Orujov G, Swidinsky A, Streich R (2022) Do metal infrastructure effects cancel out in time-lapse electromagnetic measurements? Geophysics 87(2):E91–E101

Osseyran A, Giles M (2015) Industrial applications of high-performance computing: best global practices, vol. 25, CRC Press

Ozkaya U, Seyfi L (2018) Deep dictionary learning application in GPR b-scan images. SIViP 12:1567–1575

Pádua MB, Padilha AL, Vitorello Í (2002) Disturbances on magnetotelluric data due to DC electrified railway: a case study from southeastern Brazil. Earth Planets Space 54(5):591–596

Panda S, Akhter Z, Akhtar MJ (2016) Subsurface imaging of concrete structures using neural network approach. In: 2016 IEEE MTT-S international microwave and RF conference (IMaRC), pp 1–4. IEEE

Pankratov O, Kuvshinov A (2016) Applied mathematics in EM studies with special emphasis on an uncertainty quantification and 3-D integral equation modelling. Surv Geophys 37:109–147

Park J, Sauvin G, Vöge M (2017) 2.5 D inversion and joint interpretation of CSEM data at Sleipner CO \(_{2}\) storage. Energy Procedia 114:3989–3996

Patzer C, Tietze K, Ritter O (2017) Steel-cased wells in 3-D controlled source EM modelling. Geophys J Int 209(2):813–826

Piattini M, Peterssen G, Pérez-Castillo R (2021) Quantum computing: a new software engineering golden age. ACM SIGSOFT Softw Eng Notes 45(3):12–14

Piña-Varas P, Ledo J, Queralt P, Marcuello A, Bellmunt F, Ogaya X, Pérez N, Rodriguez-Losada J (2015) Vertical collapse origin of Las Cañadas caldera (Tenerife, Canary Islands) revealed by 3-D magnetotelluric inversion. Geophys Res Lett 42(6):1710–1716

Puzyrev V (2019) Deep learning electromagnetic inversion with convolutional neural networks. Geophys J Int 218(2):817–832

Puzyrev V, Swidinsky A (2021) Inversion of 1D frequency-and time-domain electromagnetic data with convolutional neural networks. Comput Geosci 149:104681

Puzyrev V, Koldan J, de la Puente J, Houzeaux G, Vázquez M, Cela JM (2013) A parallel finite-element method for three-dimensional controlled-source electromagnetic forward modelling. Geophys J Int 193(2):678–693

Puzyrev V, Vilamajo E, Queralt P, Ledo J, Marcuello A (2017) Three-dimensional modeling of the casing effect in onshore controlled-source electromagnetic surveys. Surv Geophys 38(2):527–545

Qi X (2023) Three-dimensional inversion of controlled-source electromagnetic data for surveying the Jiutianshan high-speed railway tunnel, China. J Appl Geophys 209:104901

Qian W, Boerner D (1995) Electromagnetic modelling of buried line conductors using an integral equation. Geophys J Int 121(1):203–214

Queralt P, Jones AG, Ledo J (2007) Electromagnetic imaging of a complex ore body: 3D forward modeling, sensitivity tests, and down-mine measurements. Geophysics 72(2):F85–F95

Raiche A (1974) An integral equation approach to three-dimensional modelling. Geophys J Int 36(2):363–376

Reeck K, Müller H, Hölz S, Haroon A, Schwalenberg K, Jegen M (2020) Effects of metallic system components on marine electromagnetic loop data. Geophys Prospect 68(7):2254–2270

Ren Z, Kalscheuer T, Greenhalgh S, Maurer H (2013) A goal-oriented adaptive finite-element approach for plane wave 3-D electromagnetic modelling. Geophys J Int 194(2):700–718

Rijo L (1977) Modeling of electric and electromagnetic data. Ph.D. thesis, The University of Utah

Rochlitz R, Skibbe N, Günther T (2019) custEM: customizable finite-element simulation of complex controlled-source electromagnetic data. Geophysics 84(2):F17–F33

Rodi WL (1976) A technique for improving the accuracy of finite element solutions for magnetotelluric data. Geophys J Int 44(2):483–506

Schenk O, Gärtner K (2004) Solving unsymmetric sparse systems of linear equations with PARDISO. Futur Gener Comput Syst 20(3):475–487

Schenkel CJ, Morrison HF (1990) Effects of well casing on potential field measurements using downhole current sources. Geophys Prospect 38(6):663–686

Schwarzbach C (2009) Stability of finite element solutions to Maxwell’s equations in frequency domain. Ph.D. thesis

Schwarzbach C, Börner R-U, Spitzer K (2011) Three-dimensional adaptive higher order finite element simulation for geo-electromagnetics-a marine CSEM example. Geophys J Int 187(1):63–74

Shahriari M, Pardo D, Moser B, Sobieczky F (2020) A deep neural network as surrogate model for forward simulation of borehole resistivity measurements. Procedia Manuf 42:235–238

Shahriari M, Pardo D, Picón A, Galdran A, Del Ser J, Torres-Verdín C (2020) A deep learning approach to the inversion of borehole resistivity measurements. Comput Geosci 24(3):971–994

Shahriari M, Pardo D, Rivera JA, Torres-Verdín C, Picon A, Del Ser J, Ossandon S, Calo VM (2021) Error control and loss functions for the deep learning inversion of borehole resistivity measurements. Int J Numer Methods Eng 122(6):1629–1657

Shalf J, Dosanjh S, Morrison J (2011) Exascale computing technology challenges. In: High performance computing for computational science–VECPAR 2010: 9th international conference, Berkeley, CA, USA, June 22–25, 2010, Revised Selected Papers 9, pp 1–25. Springer

Shantsev DV, Jaysaval P, De LK, De Ryhove S, Amestoy PR, Buttari A, l’Excellent J-Y, T M (2017) Large-scale 3-D EM modelling with a block low-rank multifrontal direct solver. Geophys J Int 209(3):1558–1571

Sheard S, Ritchie T, Christopherson KR, Brand E (2005) Mining, environmental, petroleum, and engineering industry applications of electromagnetic techniques in geophysics. Surv Geophys 26(5):653–669

Shlager KL, Schneider JB (1995) A selective survey of the finite-difference time-domain literature. IEEE Antennas Propag Mag 37(4):39–57

Siahkoohi A, Rizzuti G, Herrmann F (2020) A deep-learning based Bayesian approach to seismic imaging and uncertainty quantification. In: EAGE 2020 annual conference & exhibition online, vol. 2020, pp 1–5. European Association of Geoscientists & Engineers

Siemon B, Steuer A, Ullmann A, Vasterling M, Voß W (2011) Application of frequency-domain helicopter-borne electromagnetics for groundwater exploration in urban areas. Phys Chem Earth Parts A/B/C 36(16):1373–1385

Sill WR, Ward SH (1978) Electrical energizing of well casings. University of Utah, Department of Geology and Geophysics

Sommer M, Hölz S, Moorkamp M, Swidinsky A, Heincke B, Scholl C, Jegen M (2013) GPU parallelization of a three dimensional marine CSEM code. Comput Geosci 58:91–99

Spitzer K (2022) Electromagnetic modeling using adaptive grids—a reflection on the term geometry. In: 25th EM induction workshop, vol 2022, pp 1–5. International Association of Geomagnetism and Aeronomy

Srnka LJ, Carazzone JJ, Ephron MS, Eriksen EA (2006) Remote reservoir resistivity mapping. Lead Edge 25(8):972–975

Streich R (2009) 3D finite-difference frequency-domain modeling of controlled-source electromagnetic data: direct solution and optimization for high accuracy. Geophysics 74(5):F95–F105

Streich R (2016) Controlled-source electromagnetic approaches for hydrocarbon exploration and monitoring on land. Surv Geophys 37:47–80

Streich R, Swidinsky A (2023) On method-of-moments modelling of electromagnetic sources connected to metallic well casings. Geophys J Int 234(2):1476–1483

...Sun Z, Sandoval L, Crystal-Ornelas R, Mousavi SM, Wang J, Lin C, Cristea N, Tong D, Carande WH, Ma X, Rao Y, Bednar JA, Tan A, Wang J, Purushotham S, Gill TE, Chastang J, Howard D, Holt B, Gangodagamage C, Zhao P, Rivas P, Chester Z, Orduz J, John A (2022) A review of Earth artificial intelligence. Comput Geosci 159:105034

Swidinsky A, Edwards RN, Jegen M (2013) The marine controlled source electromagnetic response of a steel borehole casing: applications for the NEPTUNE Canada gas hydrate observatory. Geophys Prospect 61(4):842–856

Tang W, Li Y, Swidinsky A, Liu J (2015) Three-dimensional controlled-source electromagnetic modelling with a well casing as a grounded source: a hybrid method of moments and finite element scheme. Geophys Prospect 63(6):1491–1507

Tietze K, Ritter O, Veeken P (2015) Controlled-source electromagnetic monitoring of reservoir oil saturation using a novel borehole-to-surface configuration. Geophys Prospect 63(6):1468–1490

Tveit S, Mannseth T, Park J, Sauvin G, Agersborg R (2020) Combining CSEM or gravity inversion with seismic AVO inversion, with application to monitoring of large-scale CO \(_{2}\) injection. Comput Geosci 24(3):1201–1220

Um ES, Commer M, Newman GA (2013) Efficient pre-conditioned iterative solution strategies for the electromagnetic diffusion in the Earth: finite-element frequency-domain approach. Geophys J Int p ggt071

Um ES, Commer M, Newman GA, Hoversten GM (2015) Finite element modelling of transient electromagnetic fields near steel-cased wells. Geophys J Int 202(2):901–913

Um ES, Kim S-S, Fu H (2017) A tetrahedral mesh generation approach for 3D marine controlled-source electromagnetic modeling. Comput Geosci 100:1–9

Um ES, Kim J, Wilt M (2020) 3D borehole-to-surface and surface electromagnetic modeling and inversion in the presence of steel infrastructure. Geophysics 85(5):E139–E152

Van der Baan M, Jutten C (2000) Neural networks in geophysical applications. Geophysics 65(4):1032–1047

Vilamajó E, Queralt P, Ledo J, Marcuello A (2013) Feasibility of monitoring the Hontomín (Burgos, Spain) CO \(_{2}\) storage site using a deep EM source. Surv Geophys 34(4):441–461

Vilamajó E, Rondeleux B, Queralt P, Marcuello A, Ledo J (2015) A land controlled-source electromagnetic experiment using a deep vertical electric dipole: experimental settings, processing, and first data interpretation. Geophys Prospect 63(6):1527–1540

Vilamajó E, Puzyrev V, Queralt P, Marcuello A, Ledo J (2016) Study of the casing effect on borehole-to-surface onshore CSEM. In: 78th EAGE conference and exhibition 2016, vol. 2016, pp 1–5. European Association of Geoscientists & Engineers

Wait JR (1972) The effect of a buried conductor on the subsurface fields for line source excitation. Radio Sci 7(5):587–591

Wait JR, Hill DA (1973) Excitation of a homogeneous conductive cylinder of finite length by a prescribed axial current distribution. Radio Sci 8(12):1169–1176

Wan Y, Li T, Wang P, Duan S, Zhang C, Li N (2021) Robust and efficient classification for underground metal target using dimensionality reduction and machine learning. IEEE Access 9:7384–7401

Wannamaker PE (1991) Advances in three-dimensional magnetotelluric modeling using integral equations. Geophysics 56(11):1716–1728

Wannamaker PE, Hohmann GW, SanFilipo WA (1984) Electromagnetic modeling of three-dimensional bodies in layered earths using integral equations. Geophysics 49(1):60–74

Wannamaker PE, Stodt JA, Rijo L (1986) Two-dimensional topographic responses in magnetotellurics modeled using finite elements. Geophysics 51(11):2131–2144

Wannamaker PE, Stodt JA, Rijo L (1987) A stable finite element solution for two-dimensional magnetotelluric modelling. Geophys J Int 88(1):277–296

Ward SH, Hohmann GW (1988) Electromagnetic theory for geophysical applications. In: Electromagnetic Methods in Applied Geophysics: Voume 1, Theory, pp 130–311. Society of Exploration Geophysicists

Weiss CJ (2017) Finite-element analysis for model parameters distributed on a hierarchy of geometric simplices. Geophysics 82(4):E155–E167

Weiss CJ, Aldridge DF, Knox HA, Schramm KA, Bartel LC (2016) The direct-current response of electrically conducting fractures excited by a grounded current source. Geophysics 81(3):E201–E210

Werthmüller D (2017) An open-source full 3D electromagnetic modeler for 1D VTI media in Python: empymod. Geophysics 82(6):WB9–WB19

Werthmüller D, Rochlitz R, Castillo-Reyes O, Heagy L (2021) Towards an open-source landscape for 3-D CSEM modelling. Geophys J Int 227(1):644–659. https://doi.org/10.1093/gji/ggab238

Wilt M, Alumbaugh D (2003) Oil field reservoir characterization and monitoring using electromagnetic geophysical techniques. J Petrol Sci Eng 39(1–2):85–97

Wilt MJ, Um ES, Nichols E, Weiss CJ, Nieuwenhuis G, MacLennan K (2020) Casing integrity mapping using top-casing electrodes and surface-based electromagnetic fields. Geophysics 85(1):E1–E13

Wirianto M, Mulder W, Slob E (2010) A feasibility study of land CSEM reservoir monitoring in a complex 3-D model. Geophys J Int 181(2):741–755

CAS   Google Scholar  

Wu X, Habashy TM (1994) Influence of steel casings on electromagnetic signals. Geophysics 59(3):378–390

Xie Z, Chan C-H, Zhang B (2002) An explicit fourth-order orthogonal curvilinear staggered-grid FDTD method for Maxwell’s equations. J Comput Phys 175(2):739–763

Xiong W, Ji X, Ma Y, Wang Y, AlBinHassan NM, Ali MN, Luo Y (2018) Seismic fault detection with convolutional neural network. Geophysics 83(5):O97–O103

Xiong Z, Tripp AC (1997) 3-D electromagnetic modeling for near-surface targets using integral equations. Geophysics 62(4):1097–1106

Yang D, Oldenburg DW (2012) Three-dimensional inversion of airborne time-domain electromagnetic data with applications to a porphyry deposit. Geophysics 77(2):B23–B34

Yang D, Oldenburg DW (2016) Survey decomposition: a scalable framework for 3D controlled-source electromagnetic inversion. Geophysics 81(2):E69–E87

Yang D, Oldenburg D, Heagy L (2016) 3D DC resistivity modeling of steel casing for reservoir monitoring using equivalent resistor network. In: 2016 SEG international exposition and annual meeting, OnePetro

Yang D, Guan S, Chen Z (2019) Parallel 3D modeling of marine controlled source electromagnetic data using survey decomposition. In: SEG international exposition and annual meeting, p D033S068R001, SEG

Yang F, Ma J (2019) Deep-learning inversion: a next-generation seismic velocity model building method. Geophysics 84(4):R583–R599

Yang P (2021) Boost the efficiency of 3D CSEM modelling using graphics processing units. In: 82nd EAGE annual conference & exhibition, vol. 2021, pp 1–5. European Association of Geoscientists & Engineers

Yang P (2023) libEMM: a fictious wave domain 3D CSEM modelling library bridging sequential and parallel GPU implementation. Comput Phys Commun 288:108745

Yang W, Torres-Verdín C, Hou J, Zhang Z (2009) 1D subsurface electromagnetic fields excited by energized steel casing. Geophysics 74(4):E159–E180

Yee K (1966) Numerical solution of initial boundary value problems involving Maxwell’s equations in isotropic media. IEEE Trans Antennas Propag 14(3):302–307

Zhang G, Zhang G-B, Chen C-C, Chang P-Y, Wang T-P, Yen H-Y, Dong J-J, Ni C-F, Chen S-C, Chen C-W et al (2016) Imaging rainfall infiltration processes with the time-lapse electrical resistivity imaging method. Pure Appl Geophys 173(6):2227–2239

Zhdanov MS (2009) Geophysical electromagnetic theory and methods, vol. 43, Elsevier

Zhdanov MS, Wannamaker PE (2002) Three-dimensional electromagnetics. In: Proceedings of the second international symposium. Elsevier

Zhdanov MS, Lee SK, Yoshioka K (2006) Integral equation method for 3D modeling of electromagnetic fields in complex structures with inhomogeneous background conductivity. Geophysics 71(6):G333–G345

Zheng Y, Zhang Q, Yusifov A, Shi Y (2019) Applications of supervised deep learning for seismic interpretation and inversion. Lead Edge 38(7):526–533

Zhu G, Gao M, Kong F, Li K (2020) A fast inversion of induction logging data in anisotropic formation based on deep learning. IEEE Geosci Remote Sens Lett 17(12):2050–2054

Zhu Y, Cangellaris A (2006) Multigrid Finite Element Methods for Electromagnetic Field Modeling. IEEE Press Series on Electromagnetic Wave Theory, Wiley

Zyserman FI, Santos JE (2000) Parallel finite element algorithm with domain decomposition for three-dimensional magnetotelluric modelling. J Appl Geophys 44(4):337–351

Download references

Acknowledgements

The work of O.C-R., P.Q., P.P., and J. L. have received funding from the MCIN/AEI /10.13039/501100011033 (Spain) and from the European Union NextGenerationEU/PRTR under the project GEOTHERPAL-EM_TED2021-131882B-C42 and -C41.

Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.

Author information

Authors and affiliations.

Department of Computer Architecture, Universitat Politècnica de Catalunya - BarcelonaTech (UPC), Jordi Girona 1-3, 08034, Barcelona, Spain

Octavio Castillo-Reyes

Barcelona Supercomputing Center (BSC), Plaça Eusebi Güell 1-3, 08034, Barcelona, Spain

Octavio Castillo-Reyes & Otilio Rojas

Departament de Dinàmica de la Terra i de l’Oceà, Institut Geomodels, Universitat de Barcelona (UB), Barcelona, 08028, Spain

Pilar Queralt & Perla Piñas-Varas

Department of Physics of the Earth and Astrophysics, Complutense University of Madrid (UCM), Madrid, 28040, Spain

Juanjo Ledo

You can also search for this author in PubMed   Google Scholar

Corresponding author

Correspondence to Octavio Castillo-Reyes .

Additional information

Publisher's note.

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ .

Reprints and permissions

About this article

Castillo-Reyes, O., Queralt, P., Piñas-Varas, P. et al. Electromagnetic Subsurface Imaging in the Presence of Metallic Structures: A Review of Numerical Strategies. Surv Geophys (2024). https://doi.org/10.1007/s10712-024-09855-7

Download citation

Received : 23 June 2023

Accepted : 23 July 2024

Published : 28 August 2024

DOI : https://doi.org/10.1007/s10712-024-09855-7

Share this article

Anyone you share the following link with will be able to read this content:

Sorry, a shareable link is not currently available for this article.

Provided by the Springer Nature SharedIt content-sharing initiative

  • Geo-electromagnetic methods
  • Numerical modeling
  • Borehole geophysics
  • Metallic casing
  • High-performance computing (HPC)
  • Find a journal
  • Publish with us
  • Track your research

IMAGES

  1. Literature reviews

    literature review on distribution strategy

  2. McDonald's Distribution Strategy: A Global Success Story Free Essay Example

    literature review on distribution strategy

  3. Literature Review: Outline, Strategies, and Examples

    literature review on distribution strategy

  4. (PDF) A Literature Review on Distribution System State Estimation

    literature review on distribution strategy

  5. 50 Smart Literature Review Templates (APA) ᐅ TemplateLab

    literature review on distribution strategy

  6. Guidance on Conducting a Systematic Literature Review

    literature review on distribution strategy

VIDEO

  1. Introduction to Literature Review, Systematic Review, and Meta-analysis

  2. 02 Marketing Channels in the Supply Chain DISTRIBUTION MANAGEMENT

  3. COMSC156Lecture16 1

  4. Statistics

  5. TOP 2 Principles of DISTRIBUTION STRATEGY that you must know!📈

  6. Supply Chain Management: Transportation Strategies for Retailers

COMMENTS

  1. Manufacturer's optimal distribution strategy in the ...

    This study delves into the realm of distribution strategies employed in retail markets, particularly focusing on the widely utilized bundle-and-add-on strategy. Three distinct distribution strategies are examined: bundled-by-the-base-manufacturer (BBBM), bundled-by-the-platform, and the add-on approach within a platform supply chain context. Through comprehensive analysis, this paper ...

  2. (PDF) Performance Impact of Distribution Expansion: A Review and

    The emergence of new technologies, shifting consumer needs and growth in competition have made the expansion of distribution a business imperative for many firms. In this chapter, we review the ...

  3. A sectoral perspective on distribution structure design

    2. Literature review. In this section, we briefly discuss the literature based framework for DSD as developed in Onstein, Tavasszy, and van Damme (Citation 2019a), which is the starting point for our research. Distribution structure design (DSD) includes DC location selection as well as distribution channel layout - i.e. the freight transport ...

  4. Implications of unobservable promotion on distribution channel

    Existing literature on distribution channel (DC) strategies shows how the supplier decides distribution strategies in a retail platform, which is a threshold strategy of commission rate, according to Cai (2010) and Shen et al. ... Literature review. In the section, we briefly review three streams of research literature to which our work is ...

  5. Factors determining distribution structure decisions in logistics: a

    The main research question for the literature review is: Which factors determine companies' decisions on distribution structures? The paper is organised into five sections. Section 2 describes the review approach. In Section 3 we present and discuss the results of the review by research stream.

  6. Introduction to Distribution Strategy

    A new market entry or product launch can also command the development of a robust Distribution Strategy. A robust methodology, pertinent organizational capabilities and the right mindset virtually every company can be in full control of its distribution. These three areas are precisely the focus of the book.

  7. Optimization of Collaborative Transport and Distribution Strategies

    Since this work concerns a state of the art on the subject of the optimization of collaborative transport and distribution strategies, a Systematic Literature Review is conducted. It includes 5 major steps. The first step revolves about the formulation of the search question then fixing the appropriate keywords for the review.

  8. Omni-channel management in the new retailing era: A systematic review

    Melacini et al. (2018) conduct a systematic literature review on e-fulfilment and distribution in omni-channel retailing and investigate the issues of distribution network, delivery, and inventory management. The authors identify that many essential topics in the omnichannel context are underexplored, which includes "retail distribution ...

  9. 14 Supply Chain Distribution Strategy

    The supply chain aspect of distribution strategy, the focus of this chapter, is concerned with the management of product flow, namely, how a firm should arrange its product logistics through different channels or facilities so as to satisfy customers' needs at the minimum cost (Ross and Rogers 1996).To make the difference between the marketing aspect and supply chain aspect more evident and ...

  10. Full article: A systematic literature review on e-commerce logistics

    A systematic literature review on e-commerce logistics: towards an e-commerce and omni-channel decision framework. ... Holzapfel, and Kuhn Citation 2016), followed by creating an omni-channel last-mile fulfilment and distribution strategy planning framework (Hübner, Kuhn, and Wollenburg Citation 2016).

  11. DISTRIBUTION STRATEGY FOR NEW PRODUCT MARKETING SUCCESS ...

    PDF | On Dec 30, 2018, R. Agus Trihatmoko and others published DISTRIBUTION STRATEGY FOR NEW PRODUCT MARKETING SUCCESS: FAST MOVING CONSUMER GOODS (FMCG) BUSINESS | Find, read and cite all the ...

  12. PDF Handbook of Research on Distribution Channels

    chapter, we review the empirical marketing literature on the performance consequences of distribution expansion and offer an agenda for future research. In doing so, we consider two dimensions of distribution expansion - increases in the intensity of distribution in extant channels and the addition of a new distribution channel.

  13. A systematic literature review of supply chain ...

    The aim of this paper is to map the state of empirical research with respect to the dyadic relationship of SCM practices with supply chain performance (SCP), published in literature in recent past (2018-2022). The importance of empirical studies has been emphasized by various authors [11]. Hence this study aims to synthesize the findings of ...

  14. Distribution network design: a literature review and a research agenda

    Purpose. The purpose of this paper is threefold. First, it classifies research on distribution network design (DND) according to the methodologies adopted and themes tackled. Second, it discusses the main implications for practitioners. Finally, it proposes a few promising directions for future research.

  15. Optimizing the distribution planning process in supply chains with

    the distribution planning process in supply chains with distribution strategy choice, Journal of the Operational Research Society, DOI: 10.1080/01605682.2020.1727785 To link to this article: https ...

  16. Modeling Emerging-Market Firms' Competitive Retail Distribution Strategies

    Given the competitive landscape, manufacturers' distribution strategies should be based on anticipation of competitor reactions. Accordingly, the authors develop a manufacturer-level competition model to study the distribution and price decisions of insecticide manufacturers competing across multiple product forms and retail channels.

  17. Demand-driven supply chain operations management strategies

    The literature on demand-driven supply chain operations management strategies (DDSCOMSs) is excellent in describing when, where and how the strategies can be used. However, managers of manufacturing companies usually employ more than one DDSCOMS when designing and operating their supply chains, thus needing to understand when, how and why two ...

  18. A Study on Distribution Channel Strategy: Retailers' Perspective

    Distribution channel strategy plays significant role in distribution of goods and services to the end customers at the right place and at the right time. The purpose of this article is to identify the retailers' perspective on distribution channel strategy of XYZ Masala Brand and to assess the retailers' satisfaction level with XYZ Masala ...

  19. IJMS

    Fungal colonization poses a significant risk for neonates, leading to invasive infections such as fungemia. While Candida species are the most commonly identified pathogens, other rare yeasts are increasingly reported, complicating diagnosis and treatment due to limited data on antifungal pharmacokinetics. These emerging yeasts, often opportunistic, underscore the critical need for early ...

  20. PDF DISTRIBUTION STRATEGY FOR NEW PRODUCT MARKETING SUCCESS ...

    Based on a review of the previous literature, it is indicated that the deepening of the performance and success of new products referring to the distribution strategy is the

  21. Obstructive sleep apnea -related hypertension: a review of the ...

    Obstructive Sleep Apnea (OSA) and hypertension have a high rate of co-occurrence, with OSA being a causative factor for hypertension. Sympathetic activity due to intermittent hypoxia and/or ...

  22. The developer's optimal distribution strategy in the differentiated

    As a variety of online game products are released on different platforms, developers actively collect user review data, we explore the optimal distribution channels of the online game considering application platform service level and network externalities, while also assessing the data's value in the context of digital products. In comparison to prior research, our challenge is to examine the ...

  23. Distribution systems operation and planning: A literature review on

    This chapter aims to present a comprehensive review of the literature on resilience enhancement in smart electric power distribution systems. This study investigated improving strategies offered by recent existing techniques in considerable detail. ... Resilience enhancement strategy for distribution systems under extreme weather events. IEEE ...

  24. The Impacts of Mining Industries on Land Tenure in Ghana: A ...

    This systematic literature review thoroughly analyzes the impact of mining on land rights in Ghana, revealing complex dynamics, challenges, and possible remedies. To achieve this, 183 of an initial pool of 495 academic journals, research papers, books, reports, policies, and legal documents were critically reviewed.

  25. (PDF) THE EFFECT OF DISTRIBUTION CHANNELS' STRATEGIES ...

    distribution is a distribution strategy where companies sell their products in specific retail stores or websites rather than sell it in every store possible (Ramanathan and Parrott, 2017).

  26. Children

    Gastrointestinal stromal tumors (GISTs) are rare mesenchymal neoplasms that primarily affect adults, with pediatric cases constituting only 0.5-2.7% of the total. Pediatric GISTs present unique clinical, genetic, and pathological features that distinguish them from adult cases. This literature review aims to elucidate these differences, emphasizing diagnostic and therapeutic challenges.

  27. Practices for improving secondary school climate: A systematic review

    School climate has received increased attention in education policy and, in response, educators are seeking strategies to improve the climates of their middle and high schools. However, there has been no comprehensive synthesis of the empirical evidence for what works in school climate improvement. This article constitutes a systematic review of programs and practices with empirical support ...

  28. (PDF) Determination of Distribution Channel Marketing and Service

    Overall, we contribute to the marketing and SCM literatures by (1) reviewing the breadth of the most impactful literature on SCM that is directly connected to the field of marketing, (2 ...

  29. Electromagnetic Subsurface Imaging in the Presence of ...

    Electromagnetic (EM) imaging aims to produce large-scale, high-resolution soil conductivity maps that provide essential information for Earth subsurface exploration. To rigorously generate EM subsurface models, one must address both the forward problem and the inverse problem. From these subsurface resistivity maps, also referred to as volumes of resistivity distribution, it is possible to ...

  30. Postoperative lingual nerve injury following airway management: A

    This review aims to consolidate available literature and compile evidence on the management of lingual nerve injury. Search strategy We conducted a review of the literature to evaluate the current trends in postoperative tongue numbness following airway management.