The application of multi-slice spiral CT angiography in thoracic vascular emergency

Objective To evaluate multi-slice spiral CT (MSCT) angiography in the diagnosis of aortic dissection.?Methods 12 cases suspected of aortic dissection were examined by MSCT. Two dimensional and three dimensional imaging methods were used.?Results 4 Debakey type Ⅰ cases,3 typeⅡ cases and 5 typeⅢ cases of aortic dissection were found to show specific signs, i.e. intimal flaps and true and flase double aortic lumen.The non-specific signs included thicking and calcification of the aortic wall,irregular aortic dilation and intraluminal thrombus.Two dimensional imaging (MPVR and CRI) could clearly show the extent, size and details of lesions.The space relationship and calcifation of aorta were displayed in three dimensional imaging (SSD,VR and MIP). The presence of intimal flap and reentry of dissection could be clarified by CTVE.?Conclusions Associated with image post processing,MSCT angiography is an effective method for diagnosing aortic dissection.