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目的探讨多层螺旋CT血管成像(MSCTA)在主动脉夹层中的应用价值。方法回顾性分析56例主动脉夹层的CT表现,后处理方法采用容积再现法(VR)、表面覆盖法(SSD)、最大密度投影(MIP)、多平面重组(MPR)及曲面重建等处理技术,以VR作为诊断的主要依据,其他重组方法作为补充。结果56例主动脉夹层中,主动脉增宽28例(50%),观察到内膜钙化移位22例(39.3%),心包纵隔积血18例(32.1%),胸腔积液12例(21.4%)。结论多层螺旋CT血管成像对主动脉夹层有较高的诊断价值,能较好的显示真假腔、内膜及受累血管的范围,为手术提供重要信息。
Objective To investigate the value of multi-slice spiral CT angiography (MSCTA) in aortic dissection. Methods The CT findings of 56 cases of aortic dissection were retrospectively analyzed. The post-treatment methods included volume rendering (VR), surface coverage (SSD), maximum density projection (MIP), multiplanar reconstruction (MPR) and surface reconstruction , With VR as the main basis for diagnosis, other recombination methods as a supplement. Results In 56 cases of aortic dissection, aortic dissection was widened in 28 cases (50%). Intimal calcification was found in 22 cases (39.3%), pericardial mediastinal hemorrhage in 18 cases (32.1%) and pleural effusion in 12 cases 21.4%). Conclusions Multi-slice spiral CT angiography has a high diagnostic value for aortic dissection, and can well display the true and false lumen, endometrium and vascular involvement, providing important information for surgery.