主动脉夹层动脉瘤的ULF－MRI诊断

Diagnosis of Aortic Dissection using ULF-MRI

目的：回顾性评价主动脉夹层动脉瘤的超低场磁共振成像（简称ＵＬＦ－ＭＲＩ）表现及诊断价值。材料和方法：８例主动脉夹层动脉瘤患者ＵＬＦ－ＭＲＩ检查１１例次，采用芬兰常导型，ＭＡＧＮＥＶＩＥＷ０．０４Ｔ机，作常规Ｔ１、Ｔ２加权相扫描，籍最基本的血流流空现象显示心脏大血管。结果：１．均能显示主动脉真、假腔和／或撕裂内膜瓣及附壁血栓以明确诊断。结论：认为ＵＬＦ－ＭＲＩ图像空间分辨率虽低，仍可作为诊断本病敏感而无创伤性检查手段这一。

To evaluate the diagnostic criteria of the 8 cases of aortic dissection retrospectively by ULF-MRI. Materials and Methods; 0.04T resistive Magneview imported from Finland with routine T1 and T2 weighted images by means of flow voiding principle was used to present heart and blood vessels.Results:The true and false channels of the dissected aorta together with the intimal flap and the parietal thrombus could be demonstrated so as to confirm the diagnosis.Conclusion:Though the spacial resolution of ULF-MRI is low, it still can be considered as one of sensitive and non-invasive method available for diagnosing the dissction of the aorta.