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Williams MC, Weir-McCall JR, Baldassarre LA, De Cecco CN, Choi AD, Dey D, Dweck MR, Isgum I, Kolossvary M, Leipsic J, Lin A, Lu MT, Motwani M, Nieman K, Shaw L, van Assen M, Nicol E. Artificial intelligence and machine learning for cardiovascular computed tomography (CCT): A white paper of the society of cardiovascular computed tomography (SCCT). J Cardiovasc Comput Tomogr 2024:S1934-5925(24)00405-2. [PMID: 39214777 DOI: 10.1016/j.jcct.2024.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 08/03/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024]
Affiliation(s)
| | | | - Lauren A Baldassarre
- Section of Cardiovascular Medicine and Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT, USA
| | | | - Andrew D Choi
- The George Washington University School of Medicine, Washington, USA
| | - Damini Dey
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Marc R Dweck
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - Ivana Isgum
- Amsterdam University Medical Center, University of Amsterdam, Netherlands
| | - Márton Kolossvary
- Gottsegen National Cardiovascular Center, Budapest, Hungary, and Physiological Controls Research Center, University Research and Innovation Center, Óbuda University, Budapest, Hungary
| | | | - Andrew Lin
- Victorian Heart Institute and Monash Health Heart, Victorian Heart Hospital, Monash University, Australia
| | - Michael T Lu
- Massachusetts General Hospital Cardiovascular Imaging Research Center/Harvard Medical School, USA
| | | | | | - Leslee Shaw
- Icahn School of Medicine at Mount Sinai, New York, USA
| | | | - Edward Nicol
- Royal Brompton Hospital, Guys and St Thomas' NHS Foundation Trust, London, UK; School of Biomedical Engineering and Imaging Sciences, King's College London, UK
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2
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Benjamin MM, Rabbat MG. Artificial Intelligence in Transcatheter Aortic Valve Replacement: Its Current Role and Ongoing Challenges. Diagnostics (Basel) 2024; 14:261. [PMID: 38337777 PMCID: PMC10855497 DOI: 10.3390/diagnostics14030261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
Transcatheter aortic valve replacement (TAVR) has emerged as a viable alternative to surgical aortic valve replacement, as accumulating clinical evidence has demonstrated its safety and efficacy. TAVR indications have expanded beyond high-risk or inoperable patients to include intermediate and low-risk patients with severe aortic stenosis. Artificial intelligence (AI) is revolutionizing the field of cardiology, aiding in the interpretation of medical imaging and developing risk models for at-risk individuals and those with cardiac disease. This article explores the growing role of AI in TAVR procedures and assesses its potential impact, with particular focus on its ability to improve patient selection, procedural planning, post-implantation monitoring and contribute to optimized patient outcomes. In addition, current challenges and future directions in AI implementation are highlighted.
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Affiliation(s)
- Mina M. Benjamin
- Division of Cardiovascular Medicine, SSM—Saint Louis University Hospital, Saint Louis University, Saint Louis, MO 63104, USA
| | - Mark G. Rabbat
- Department of Cardiovascular Medicine, Loyola University Medical Center, Maywood, IL 60153, USA;
- Department of Cardiology, Edward Hines Jr. VA Hospital, Hines, IL 60141, USA
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Wang M, Niu G, Chen Y, Zhou Z, Feng D, Zhang Y, Wu Y. Development and validation of a deep learning-based fully automated algorithm for pre-TAVR CT assessment of the aortic valvular complex and detection of anatomical risk factors: a retrospective, multicentre study. EBioMedicine 2023; 96:104794. [PMID: 37696216 PMCID: PMC10507199 DOI: 10.1016/j.ebiom.2023.104794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Pre-procedural computed tomography (CT) imaging assessment of the aortic valvular complex (AVC) is essential for the success of transcatheter aortic valve replacement (TAVR). However, pre-TAVR assessment is a time-intensive process, and the visual assessment of anatomical structures at the AVC shows interobserver variability. This study aimed to develop and validate a deep learning-based algorithm for pre-TAVR CT assessment and anatomical risk factor detection. METHODS This retrospective, multicentre study used AVC CT scans to develop a deep learning-based, fully automated algorithm, which was then internally and externally validated. After loading CT scans into the algorithm, it automatically assessed the essential anatomical structure data required for TAVR planning. CT scans of 1252 TAVR candidates continuously enrolled from Fuwai Hospital were used to establish training and internal validation datasets, while CT scans of 100 patients with aortic valve disease across 19 Chinese hospitals served as an external validation dataset. The validation focused on segmentation performance, localisation and measurement accuracy of key anatomical structures, detection ability of specific anatomical risk factors, and improvement in assessment efficiency. FINDINGS Relative to senior observers, our algorithm achieved significant consistent performance with remarkable accuracy, efficiency and ease in segmentation, localisation, and the assessment of the aortic annulus perimeter-derived diameter, and other basic planes, coronary ostia height, calcification volume, and aortic angle. The intraclass correlation coefficient values for the algorithm in the internal and external validation datasets were up to 0.998 (95% confidence interval 0.998-0.998), respectively. Furthermore, the algorithm demonstrated high alignment in detecting specific anatomical risk factors, with accuracy, sensitivity, and specificity up to 0.989 (95% CI 0.973-0.996), 0.979 (95% CI 0.936-0.995), 0.986 (95% CI 0.945-0.998), respectively. INTERPRETATION Our algorithm efficiently performs pre-TAVR assessments by using AVC CT imaging with accuracy comparable to senior observers, potentially improving TAVR planning in clinical practice. FUNDING National Key R&D Program of China (2020YFC2008100), CAMS Innovation Fund for Medical Sciences (2022-I2M-C&T-B-044).
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Affiliation(s)
- Moyang Wang
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China
| | - Guannan Niu
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China
| | - Yang Chen
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China
| | - Zheng Zhou
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China
| | - Dejing Feng
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China
| | - Yuxuan Zhang
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China
| | - Yongjian Wu
- National Center for Cardiovascular Disease, Fuwai Hospital, Beijing, China.
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4
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Bray JJH, Hanif MA, Alradhawi M, Ibbetson J, Dosanjh SS, Smith SL, Ahmad M, Pimenta D. Machine learning applications in cardiac computed tomography: a composite systematic review. EUROPEAN HEART JOURNAL OPEN 2022; 2:oeac018. [PMID: 35919128 PMCID: PMC9242067 DOI: 10.1093/ehjopen/oeac018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/10/2022] [Indexed: 12/02/2022]
Abstract
Artificial intelligence and machine learning (ML) models are rapidly being applied to the analysis of cardiac computed tomography (CT). We sought to provide an overview of the contemporary advances brought about by the combination of ML and cardiac CT. Six searches were performed in Medline, Embase, and the Cochrane Library up to November 2021 for (i) CT-fractional flow reserve (CT-FFR), (ii) atrial fibrillation (AF), (iii) aortic stenosis, (iv) plaque characterization, (v) fat quantification, and (vi) coronary artery calcium score. We included 57 studies pertaining to the aforementioned topics. Non-invasive CT-FFR can accurately be estimated using ML algorithms and has the potential to reduce the requirement for invasive angiography. Coronary artery calcification and non-calcified coronary lesions can now be automatically and accurately calculated. Epicardial adipose tissue can also be automatically, accurately, and rapidly quantified. Effective ML algorithms have been developed to streamline and optimize the safety of aortic annular measurements to facilitate pre-transcatheter aortic valve replacement valve selection. Within electrophysiology, the left atrium (LA) can be segmented and resultant LA volumes have contributed to accurate predictions of post-ablation recurrence of AF. In this review, we discuss the latest studies and evolving techniques of ML and cardiac CT.
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Affiliation(s)
- Jonathan James Hyett Bray
- Institute of Life Sciences 2, Swansea University Medical, School , Swansea, UK
- Cardiology Department, Royal Free Hospital, Royal Free London NHS Foundation Trust , London, UK
| | - Moghees Ahmad Hanif
- Cardiology Department, Royal Free Hospital, Royal Free London NHS Foundation Trust , London, UK
| | | | - Jacob Ibbetson
- Cardiology Department, Royal Free Hospital, Royal Free London NHS Foundation Trust , London, UK
| | | | - Sabrina Lucy Smith
- Barts and the London School of Medicine and Dentistry , London E1 2AD, UK
| | - Mahmood Ahmad
- Cardiology Department, Royal Free Hospital, Royal Free London NHS Foundation Trust , London, UK
- University College London Medical School , London WC1E 6DE, UK
| | - Dominic Pimenta
- Richmond Research Institute, St George’s Hospital, University of London , Cranmer Terrace, Tooting, London SW17 0RE, UK
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5
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Ben Ali W, Pesaranghader A, Avram R, Overtchouk P, Perrin N, Laffite S, Cartier R, Ibrahim R, Modine T, Hussin JG. Implementing Machine Learning in Interventional Cardiology: The Benefits Are Worth the Trouble. Front Cardiovasc Med 2021; 8:711401. [PMID: 34957230 PMCID: PMC8692711 DOI: 10.3389/fcvm.2021.711401] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 11/08/2021] [Indexed: 12/23/2022] Open
Abstract
Driven by recent innovations and technological progress, the increasing quality and amount of biomedical data coupled with the advances in computing power allowed for much progress in artificial intelligence (AI) approaches for health and biomedical research. In interventional cardiology, the hope is for AI to provide automated analysis and deeper interpretation of data from electrocardiography, computed tomography, magnetic resonance imaging, and electronic health records, among others. Furthermore, high-performance predictive models supporting decision-making hold the potential to improve safety, diagnostic and prognostic prediction in patients undergoing interventional cardiology procedures. These applications include robotic-assisted percutaneous coronary intervention procedures and automatic assessment of coronary stenosis during diagnostic coronary angiograms. Machine learning (ML) has been used in these innovations that have improved the field of interventional cardiology, and more recently, deep Learning (DL) has emerged as one of the most successful branches of ML in many applications. It remains to be seen if DL approaches will have a major impact on current and future practice. DL-based predictive systems also have several limitations, including lack of interpretability and lack of generalizability due to cohort heterogeneity and low sample sizes. There are also challenges for the clinical implementation of these systems, such as ethical limits and data privacy. This review is intended to bring the attention of health practitioners and interventional cardiologists to the broad and helpful applications of ML and DL algorithms to date in the field. Their implementation challenges in daily practice and future applications in the field of interventional cardiology are also discussed.
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Affiliation(s)
- Walid Ben Ali
- Service Médico-Chirurgical, Valvulopathies-Chirurgie Cardiaque-Cardiologie Interventionelle Structurelle, Hôpital Cardiologique de Haut Lévèque, Bordeaux, France.,Structural Heart Program and Interventional Cardiology, Université de Montréal, Montreal Heart Institute, Montréal, QC, Canada
| | - Ahmad Pesaranghader
- Faculty of Medicine, Research Center, Montreal Heart Institute, Université de Montréal, Montréal, QC, Canada.,Computer Science and Operations Research Department, Mila (Quebec Artificial Intelligence Institute), Montreal, QC, Canada
| | - Robert Avram
- Faculty of Medicine, Research Center, Montreal Heart Institute, Université de Montréal, Montréal, QC, Canada
| | - Pavel Overtchouk
- Interventional Cardiology and Cardiovascular Surgery Centre Hospitalier Regional Universitaire de Lille (CHRU de Lille), Lille, France
| | - Nils Perrin
- Structural Heart Program and Interventional Cardiology, Université de Montréal, Montreal Heart Institute, Montréal, QC, Canada
| | - Stéphane Laffite
- Service Médico-Chirurgical, Valvulopathies-Chirurgie Cardiaque-Cardiologie Interventionelle Structurelle, Hôpital Cardiologique de Haut Lévèque, Bordeaux, France
| | - Raymond Cartier
- Structural Heart Program and Interventional Cardiology, Université de Montréal, Montreal Heart Institute, Montréal, QC, Canada
| | - Reda Ibrahim
- Structural Heart Program and Interventional Cardiology, Université de Montréal, Montreal Heart Institute, Montréal, QC, Canada
| | - Thomas Modine
- Service Médico-Chirurgical, Valvulopathies-Chirurgie Cardiaque-Cardiologie Interventionelle Structurelle, Hôpital Cardiologique de Haut Lévèque, Bordeaux, France
| | - Julie G Hussin
- Faculty of Medicine, Research Center, Montreal Heart Institute, Université de Montréal, Montréal, QC, Canada
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6
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Lauzier PT, Avram R, Dey D, Slomka P, Afilalo J, Chow BJ. The evolving role of artificial intelligence in cardiac image analysis. Can J Cardiol 2021; 38:214-224. [PMID: 34619340 DOI: 10.1016/j.cjca.2021.09.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 12/13/2022] Open
Abstract
Research in artificial intelligence (AI) have progressed over the last decade. The field of cardiac imaging has seen significant developments using newly developed deep learning methods for automated image analysis and AI tools for disease detection and prognostication. This review article is aimed at those without special background in AI. We review AI concepts and we survey the growing contemporary applications of AI for image analysis in echocardiography, nuclear cardiology, cardiac computed tomography, cardiac magnetic resonance, and invasive angiography.
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Affiliation(s)
| | - Robert Avram
- University of Ottawa Heart Institute, Ottawa, ON, Canada; Montreal Heart Institute, Montreal, QC, Canada
| | - Damini Dey
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Piotr Slomka
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
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7
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Kara S, Akers JY, Chang PD. Identification and Localization of Endotracheal Tube on Chest Radiographs Using a Cascaded Convolutional Neural Network Approach. J Digit Imaging 2021; 34:898-904. [PMID: 34027589 PMCID: PMC8455772 DOI: 10.1007/s10278-021-00463-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 03/02/2021] [Accepted: 05/06/2021] [Indexed: 11/27/2022] Open
Abstract
Rapid and accurate assessment of endotracheal tube (ETT) location is essential in the intensive care unit (ICU) setting, where timely identification of a mispositioned support device may prevent significant patient morbidity and mortality. This study proposes a series of deep learning-based algorithms which together iteratively identify and localize the position of an ETT relative to the carina on chest radiographs. Using the open-source MIMIC Chest X-Ray (MIMIC-CXR) dataset, a total of 16,000 patients were identified (8000 patients with an ETT and 8000 patients without an ETT). Three different convolutional neural network (CNN) algorithms were created. First, a regression loss function CNN was trained to estimate the coordinate location of the carina, which was then used to crop the original radiograph to the distal trachea and proximal bronchi. Second, a classifier CNN was trained using the cropped inputs to determine the presence or absence of an ETT. Finally, for radiographs containing an ETT, a third regression CNN was trained to both refine the coordinate location of the carina and identify the location of the distal ETT tip. Model accuracy was assessed by comparing the absolute distance of prediction and ground-truth coordinates as well as CNN predictions relative to measurements documented in original radiologic reports. Upon five-fold cross validation, binary classification for the presence or absence of ETT demonstrated an accuracy, sensitivity, specificity, PPV, NPV, and AUC of 97.14%, 97.37%, 96.89%, 97.12%, 97.15%, and 99.58% respectively. CNN predicted coordinate location of the carina, and distal ETT tip was estimated within a median error of 0.46 cm and 0.60 cm from ground-truth annotations respectively. Overall final CNN assessment of distance between the carina and distal ETT tip was predicted within a median error of 0.60 cm from manual ground-truth annotations, and a median error of 0.66 cm from measurements documented in the original radiology reports. A serial cascaded CNN approach demonstrates high accuracy for both identification and localization of ETT tip and carina on chest radiographs. High performance of the proposed multi-step strategy is in part related to iterative refinement of coordinate localization as well as explicit image cropping which focuses algorithm attention to key anatomic regions of interest.
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Affiliation(s)
- Su Kara
- Capistrano Valley High School, Mission Viejo, CA, 92692, USA.
| | - Jake Y Akers
- University of California, Irvine, CA, 92697, USA
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Abd Alamir M, Nazir S, Alani A, Golub I, Gilchrist IC, Aslam F, Dhawan P, Changal K, Ostra C, Soni R, Elzanaty A, Budoff M. Multidetector computed tomography in transcatheter aortic valve replacement: an update on technological developments and clinical applications. Expert Rev Cardiovasc Ther 2020; 18:709-722. [PMID: 33063552 DOI: 10.1080/14779072.2020.1837624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Transcatheter aortic valve replacement (TAVR) has revolutionized the treatment of patients with underlying sever aortic valve stenosis across all spectrum of the disease. CT imaging is so crucial to the pre procedural planning, to incorporate the information from the CT imaging in the decision making intraprocedurally and to predict and identity the post procedural complications.Areas covered: In this article, we review available studies on CT role in TAVR procedure and provide update on the technological developments and clinical applications.Expert opinion: CT imaging, with its high resolution, and in particular its utilization in aortic annular measurements, bicuspid aortic valve assessment, hypoattenuated leaflet thickening and valve in valve therapy proved to be the ideal approach to study the mechanisms of aortic stenosis, detection of high-risk anatomy, more accurate risk stratification and thus to allow a personalized catheter based intervention of the affected patients.
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Affiliation(s)
- Moshrik Abd Alamir
- Department of Cardiology, Stony Brook University Hospital, Health Sciences Tower , Stony Brook, NY, USA
| | - Salik Nazir
- Department of Cardiology, University of Toledo , Toledo, OH, USA
| | - Anas Alani
- Loma Linda University , Loma Linda, CA, USA
| | - Ilana Golub
- Department of Cardiology, Lundquist Institute , Torrance, CA, USA
| | - Ian C Gilchrist
- Department of Cardiology, Stony Brook University Hospital, Health Sciences Tower , Stony Brook, NY, USA
| | - Faisal Aslam
- Department of Cardiology, Stony Brook University Hospital, Health Sciences Tower , Stony Brook, NY, USA
| | - Puneet Dhawan
- David Geffen School of Medicine at UCLA, Department of Surgery, Los Angeles County Harbor-UCLA Medical Center , Torrance, CA, USA
| | - Khalid Changal
- Department of Cardiology, University of Toledo , Toledo, OH, USA
| | - Carson Ostra
- Department of Cardiology, University of Toledo , Toledo, OH, USA
| | - Ronak Soni
- Department of Cardiology, University of Toledo , Toledo, OH, USA
| | - Ahmad Elzanaty
- Department of Cardiology, University of Toledo , Toledo, OH, USA
| | - Matthew Budoff
- Department of Cardiology, Lundquist Institute , Torrance, CA, USA
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