3D CE－MRA在主动脉病变中的临床价值

目的：探讨磁共振对比增强血管三维成像（3D CE-MRA）在主动脉病变中的临床价值。材料和方法：使用1.5T高场强磁共振检查仪，对50例疑主动脉病变患者进行主动脉3D CE-MRA检查。将获得的3D CE-MRA原始数据进行减影、最大信号强度投影（MIP）、多平面重建（MPR）及表面覆盖法（SSD）等后处理技术。结果：50例中正常11例，异常39例，分别为胸、腹主动脉瘤各4例，夹层动脉瘤15例，主动脉粥样硬化13例，大动脉炎1例，主动脉变异2例。其中34经手术和/或DSA检查证实。结论：3D CE-MRA是一种无创性检查主动脉病变的可靠方法，在临床诊断和治疗主动脉病变中起到重要作用。

Clinical value of three-dimensional contrast-enhanced MR angiography in aorta

Objective:To evaluate the clinical value of three-dimensional contrast-enhanced MR angiography(3D CE-MRA)in the diseases of aorta.Methods:3D CE-MRA were performed in 50 patients with 1.5T super conductive MR scanner.Postprocessing techniques including original digital subtraction and maximum intensity projection(MIP)and multiplanar reconstrution(MPR)and surface shading display(SSD).Results:In the 50 cases,11 cases are normal,39 cases are abnormal,including thoracic aortic aneurysms in 4 cases,abdominal aortic aneurysms in 4 cases,aortic dissections in 15 cases,aorta atherosclerosis in 13 cases,arteritis in 1 case,aorta aberrance in 2 cases.Thirty-four cases were proved by surgery and/or DSA.Conclusion:3D CE-MRA is a reliable noninvasive method for examining the diseases of the aorta.It has an important role in diagnosing and treating the diseases of aorta.