{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T15:56:48Z","timestamp":1791647808562,"version":"4.3.4"},"reference-count":35,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2023,7,25]],"date-time":"2023-07-25T00:00:00Z","timestamp":1690243200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81601462"],"award-info":[{"award-number":["81601462"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["2021YFS0142"],"award-info":[{"award-number":["2021YFS0142"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Key Research &amp; Development Project of Science and Technology of Sichuan Province","award":["81601462"],"award-info":[{"award-number":["81601462"]}]},{"name":"the Key Research &amp; Development Project of Science and Technology of Sichuan Province","award":["2021YFS0142"],"award-info":[{"award-number":["2021YFS0142"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>Differentiation of left atrial appendage thrombus (LAAT) and left atrial appendage (LAA) circulatory stasis is difficult when based only on single-phase computed tomography angiography (CTA) in routine clinical practice. Radiomics provides a promising tool for their identification. We retrospectively enrolled 204 (training set: 144; test set: 60) atrial fibrillation patients before ablation, including 102 LAAT and 102 circulatory stasis patients. Radiomics software was used to segment whole LAA on single-phase CTA images and extract features. Models were built and compared via a multivariable logistic regression algorithm and area under of the receiver operating characteristic curves (AUCs), respectively. For the radiomics model, radiomics clinical model, radiomics radiological model, and combined model, the AUCs were 0.82, 0.86, 0.90, 0.93 and 0.82, 0.82, 0.84, 0.85 in the training set and the test set, respectively (p &lt; 0.05). One clinical feature (rheumatic heart disease) and four radiological features (transverse diameter of left atrium, volume of left atrium, location of LAA, shape of LAA) were added to the combined model. The combined model exhibited excellent differential diagnostic performances between LAAT and circulatory stasis without increasing extra radiation exposure. The single-phase, CTA-based radiomics analysis shows potential as an effective tool for accurately detecting LAAT in patients with atrial fibrillation before ablation.<\/jats:p>","DOI":"10.3390\/diagnostics13152474","type":"journal-article","created":{"date-parts":[[2023,7,26]],"date-time":"2023-07-26T01:03:25Z","timestamp":1690333405000},"page":"2474","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Radiomics Based on Single-Phase CTA for Distinguishing Left Atrial Appendage Thrombus from Circulatory Stasis in Patients with Atrial Fibrillation before Ablation"],"prefix":"10.3390","volume":"13","author":[{"given":"Xue","family":"Li","sequence":"first","affiliation":[{"name":"Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuyan","family":"Cai","sequence":"additional","affiliation":[{"name":"Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyi","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Ming","sequence":"additional","affiliation":[{"name":"West China School of Medicine, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenzhang","family":"He","sequence":"additional","affiliation":[{"name":"Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huaxia","family":"Pu","sequence":"additional","affiliation":[{"name":"Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinyue","family":"Chen","sequence":"additional","affiliation":[{"name":"CT Collaboration, Siemens Healthineers, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2376-3268","authenticated-orcid":false,"given":"Liqing","family":"Peng","sequence":"additional","affiliation":[{"name":"Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1042","DOI":"10.1161\/01.CIR.0000140263.20897.42","article-title":"Lifetime risk for development of atrial fibrillation: The Framingham Heart Study","volume":"110","author":"Wang","year":"2004","journal-title":"Circulation"},{"key":"ref_2","first-page":"e199","article-title":"2014 AHA\/ACC\/HRS guideline for the management of patients with atrial fibrillation: A report of the American College of Cardiology\/American Heart Association Task Force on practice guidelines and the Heart Rhythm Society","volume":"130","author":"January","year":"2014","journal-title":"Circulation"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1161\/CIRCOUTCOMES.110.958165","article-title":"Estimation of total incremental health care costs in patients with atrial fibrillation in the United States","volume":"4","author":"Kim","year":"2011","journal-title":"Circ. 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