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目的探讨主动脉夹层动脉瘤患者螺旋CT检查的影像特征。方法对2003年1月—2008年1月在我院确诊的12例主动脉夹层动脉瘤患者的螺旋CT诊断结果进行分析。结果本组主动脉夹层动脉瘤Ⅰ型2例,Ⅱ型1例,Ⅲ型9例。10例表现出主动脉夹层动脉瘤的特异性征象,3例见到内膜破裂口,1例有钙化斑内移。非特异性征象可见主动脉扩张、形态不规则及各段管径比例不均匀12例,主动脉壁增厚、不规则及钙化10例,附壁血栓、管腔不规则变窄1例,主动脉分支受累3例。结论螺旋CT诊断主动脉夹层动脉瘤准确率高,“双腔征”是主动脉夹层动脉瘤CT扫描的特有征象。
Objective To explore the imaging characteristics of spiral CT in patients with aortic dissection aneurysm. Methods The results of spiral CT in 12 cases of aortic dissecting aneurysms diagnosed in our hospital from January 2003 to January 2008 were analyzed. Results The aortic dissection aneurysm type Ⅰ in 2 cases, type Ⅱ in 1 case, type Ⅲ in 9 cases. Ten cases showed aortic dissection aneurysm specific signs of endometrial rupture in 3 cases, 1 case of calcified plaque in the shift. Non-specific signs of aortic dilatation, irregular shape and the proportion of the diameter of the non-uniform proportion of 12 cases, aortic wall thickening, irregular and calcification in 10 cases, mural thrombosis, luminal irregular narrowed in 1 case, aorta Branch involvement in 3 cases. Conclusion The diagnostic accuracy of spiral CT in diagnosing aortic dissection aneurysm is high, and the “double chamber sign” is a unique sign of CT in aortic dissection.