对１０例主动脉夹层动脉瘤的ＣＴ表现进行分析，以了解该病的特征性ＣＴ征象。结果示直接征象为不同密度的真、假两腔及剥离的内膜瓣、钙化内移的内膜。认为采用适当ＣＴ扫描技术可使ＣＴ诊断本病的灵敏度＞９０％。指出了结合间接征象与其他常见主动脉病变相鉴别的要点 The CT findings of 10 cases of aortic dissection were analyzed to understand the characteristic CT signs of the disease. The results showed direct signs of different densities of true and false two-chamber and peeled intima flaps, calcified intima. It is considered that the appropriate CT scanning technology can make the sensitivity of CT diagnosis of this disease >90%. Pointed out that points in combination with indirect signs and other common aortic lesions