主动脉弓离断和闭锁的MRI诊断

MRI diagnosis of interruption and atresia of the aortic arch

目的 评价MRI对主动脉弓离断 (IAA)和闭锁 (AAA)的诊断价值。方法 对 6例IAA和 2例AAA行MRI,并经心血管造影 (CAG)和 (或 )手术证实。结果 MRI和CAG正确诊断 6例IAA ,2例AAA误诊为离断。主动脉弓远段缺如是鉴别离断和闭锁的主要依据。MRI还显示了所有合并畸形。结论 MRI在显示主动脉弓离断和闭锁的解剖结构时优于UCG ,达到CAG水平。

Objective To evaluate the capability of MRI in the diagnosis of interruption of the aortic arch(IAA) and atresia of the aortic arch(AAA) Methods MRI of 6 cases of IAA and 2 cases of AAA was respectively analysed and compared with X ray film, UCG and CAG, all cases were confirmed by surgery and /or CAG Results The diagnosis of IAA was accurately made and 2 cases of AAA were mistaken for IAA by MRI and CAG The distal segment of the aortic arch might be considered as an important point of differentiation between IAA and AAA All associated anomalies including 1 case of aneurysm of ventricular septum were shown by MRI Conculusions MRI is a very useful noninvasive imaging modality superior to UCG and comparable to CAG in the diagnosis of IAA and AAA