Coronary Artery Aneurysms and Ectasia: Role of Coronary CT Angiography
Coronary Artery Aneurysms and Ectasia: Role of Coronary CT Angiography
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DOI：
10.1148/rg.297095048
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发表时间：
2009-11-01
期刊：
影响因子：
5.5
通讯作者：
Kimura-Hayama, Eric T.
中科院分区：
文献类型：
--
作者：
Diaz-Zamudio, Mariana;Bacilio-Perez, Ulises;Kimura-Hayama, Eric T.
冠状动脉扩张-动脉瘤和扩张-是一种罕见的和经常被忽视的意外发现，在冠心病患者。动脉瘤和扩张与大量疾病相关，冠状动脉瘤和扩张的评价和表征代表了具有临床和治疗意义的重大诊断任务。潜在病因是可变的，包括退行性、先天性、炎症、感染、毒性和创伤性原因。与动脉瘤不同，扩张更常见于动脉粥样硬化或作为对侧冠状动脉近端狭窄的代偿机制;扩张也见于某些冠状动脉异常，如肺动脉异常起源，或高流量状态的结果，如冠状动脉瘘。诊断方法取决于临床情况，如今，使用多探测器计算机断层扫描进行无创评估是可能的。影像学评估应包括评价（a）分布，（B）最大直径，（c）有无腔内血栓，（d）数量，（e）扩展，（f）相关并发症，如心肌梗死。本文综述了冠状动脉瘤和扩张的定义、分类、病因、临床表现和潜在并发症。(C)RSNA，2009.radiographics.rsna.org
Coronary artery dilatations-aneurysms and ectasia-are an uncommon and frequently unrecognized incidental finding in patients with coronary artery disease. Aneurysms and ectasia are associated with a vast group of disorders, and the evaluation and characterization of coronary aneurysms and ectasia represent a great diagnostic task with clinical and therapeutic implications. The underlying etiology is variable and includes degenerative, congenital, inflammatory, infectious, toxic, and traumatic causes. Unlike aneurysms, ectasia is more frequently seen in association with atherosclerosis or as a compensatory mechanism in those cases in which a proximal stenosis is noted in the opposite coronary artery; ectasia is also seen in some coronary artery anomalies, such as anomalous origin from the pulmonary artery, or as a result of a high-flow state, as seen in coronary artery fistulas. The diagnostic approach depends on the clinical scenario, and nowadays, noninvasive evaluation with multidetector computed tomography is possible. Imaging assessment should include evaluation of ( a) the distribution, (b) maximal diameter, ( c) presence or absence of intraluminal thrombi, (d) number, ( e) extension, and (f) associated complications such as myocardial infarction. This article presents an overview of the definition, classification, etiology, clinical manifestations, and potential complications of coronary artery aneurysms and ectasia. (C) RSNA, 2009.radiographics.rsna.org