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CTCA is particularly useful when assessing for AOL aetiologies in addition to atherosclerotic disease, e.g. \u00a0Congenital anomalies, extrinsic Compression, Iatrogenic, Arteritis and Other, such as Thrombus, Embolism, Dissection and Spasm. This gives rise to \u201cCIAO (TEDS)\u201d as a proposed aide-m\u00e9moire and will form the structure of this pictorial review.<\/jats:p>","DOI":"10.1259\/bjr.20210211","type":"journal-article","created":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T19:36:55Z","timestamp":1621021015000},"source":"Crossref","is-referenced-by-count":1,"title":["Native aorto-ostial coronary lesions on CT coronary angiogram"],"prefix":"10.1093","volume":"94","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6962-3618","authenticated-orcid":false,"given":"Jan Y J","family":"Riley","sequence":"first","affiliation":[{"name":"Department of Radiology, Hammersmith Hospital, Imperial College Healthcare NHS trust , London , United Kingdom"},{"name":"Department of Diagnostic Imaging, Monash Health , Melbourne , Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kai'En","family":"Leong","sequence":"additional","affiliation":[{"name":"Department of Radiology, Hammersmith Hospital, 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