先天性主动脉缩窄的MRI诊断

目的：评价MRI在诊断主动脉缩窄中的作用和影像学表现。方法：主动脉缩窄患者16例，单纯型14例，复杂型2例，其中1例合并动脉导管未闭，4例合并动脉瘤，1例合并Debakey Ⅱ型主动脉夹层。16例均经手术证实。全部病例MRI检查包括SE序列、Cine MRI和三维动态增强磁共振造影(3DDCEMRA)。结果：16例MRI检查均清楚显示主动脉缩窄的部位、范围和程度，与手术所见完全一致。结论：MRI检查是诊断主动脉缩窄的可靠方法之一，可多方位、直观的显示病变部位及合并畸形，基本上可替代心血管造影，为临床手术提供明确的定位和定性诊断，MRI可作为诊断主动脉缩窄的首选方法之一。

MRI Diagnosis of Congenital Coarctation of Aorta

Objective: To evaluate the imaging feature and the roles of congenital coarctation of the aorta. Methods: Sixteen patients with coarctation of aorta were studied, including 14 cases of simple type and 2 cases of complex type. All of them underwent surgery and were examined by MRI including SE sequence, Cine MRI, 3 dimension dynamic contrast enhanced magnetic resonance angiography (3D DEC MRA) scanning. Results: 16 cases of coarctation of aorta studied by MRI can directly show the whole picture of abnormality, including the position, limits and degree, in comparison with operation was almost accordance. Conclusion:MRI is a noninvasive technique with excellent accuracy in the diagnosis of congenital coarctation of aorta, it well shows the position, extent and degree of coarctation of aorta, and may basically replace X-ray angiography.