{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T20:39:51Z","timestamp":1791319191173,"version":"4.3.1"},"reference-count":50,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2025,6,10]],"date-time":"2025-06-10T00:00:00Z","timestamp":1749513600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100001316","name":"Abbott","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100001316","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000274","name":"British Heart Foundation","doi-asserted-by":"publisher","award":["CS\/F\/21\/190034"],"award-info":[{"award-number":["CS\/F\/21\/190034"]}],"id":[{"id":"10.13039\/501100000274","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000274","name":"British Heart Foundation","doi-asserted-by":"publisher","award":["PG\/24\/12021"],"award-info":[{"award-number":["PG\/24\/12021"]}],"id":[{"id":"10.13039\/501100000274","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012317","name":"UCL","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100012317","id-type":"DOI","asserted-by":"publisher"}]},{"name":"UCLH Biomedicine National Institute for Health and Care Research"},{"name":"Stephen Lyness Memorial Fund"},{"DOI":"10.13039\/501100009708","name":"Novo Nordic Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100009708","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,7,22]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>The recurrence rate of ventricular tachycardia (VT) after ablation remains high due to the difficulty in locating VT critical sites. This study proposes a machine learning approach for improved identification of ablation targets based on intracardiac electrograms (EGMs) features derived from standard substrate mapping in a chronic myocardial infarction (MI) porcine model.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and results<\/jats:title>\n                    <jats:p>Thirteen pigs with chronic MI underwent invasive electrophysiological studies using multipolar catheters (Advisor\u2122 HD grid, EnSite Precision\u2122). Fifty-six substrate maps and 35 068 EGMs were collected during sinus rhythm and pacing from multiple sites, including left, right, and biventricular pacing. Ventricular tachycardia was induced in all pigs, and a total of 36 VTs were localized and mapped with early, mid-, and late diastolic components of the circuit. Mapping sites within 6\u2005mm from these critical sites were considered as potential ablation targets. Forty-six signal features representing functional, spatial, spectral, and time-frequency properties were computed from each bipolar and unipolar EGM. Several machine learning models were developed to automatically localize ablation targets, and logistic regressions were used to investigate the association between signal features and VT critical sites. Random forest provided the best accuracy based on unipolar signals from sinus rhythm map, provided an area under the curve of 0.821 with sensitivity and specificity of 81.4% and 71.4%, respectively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This study demonstrates for the first time that machine learning approaches based on EGM features may support clinicians in localizing targets for VT ablation using substrate mapping. This could lead to the development of similar approaches in VT patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ehjdh\/ztaf064","type":"journal-article","created":{"date-parts":[[2025,6,9]],"date-time":"2025-06-09T07:23:23Z","timestamp":1749453803000},"page":"645-655","source":"Crossref","is-referenced-by-count":8,"title":["Machine learning approach for automated localization of ventricular tachycardia ablation targets from substrate maps: development and validation in a porcine model"],"prefix":"10.1093","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-3268-9193","authenticated-orcid":false,"given":"Xuezhe","family":"Wang","sequence":"first","affiliation":[{"name":"Institute of Cardiovascular Science, University College London , 1-19 Torrington Pl, London WC1E 7HB ,","place":["UK"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam","family":"Dennis","sequence":"additional","affiliation":[{"name":"Institute of Cardiovascular 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,","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan M","family":"Sattler","sequence":"additional","affiliation":[{"name":"Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen , Copenhagen ,","place":["Denmark"]},{"name":"Department of Cardiology, Heart Centre Copenhagen University Hospital , Copenhagen ,","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Williams","sequence":"additional","affiliation":[{"name":"Abbott Medical United Kingdom , Blythe Valley Park, Solihull ,","place":["UK"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacob","family":"Tfelt-Hansen","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Heart Centre Copenhagen University Hospital , Copenhagen ,","place":["Denmark"]},{"name":"Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen , 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