目的探讨急性主动脉夹层的CT诊断价值。方法回顾性分析16例急性主动脉夹层患者CT急诊资料。结果 14例显示主动脉不同程度扩张,8例显示主动脉内真假腔,11例显示分隔线,13例显示内膜钙化斑内移,6例显示主动脉呈椭圆形。结论 CT平扫对急性主动脉夹层的诊断有重要价值。 Objective To investigate the value of CT in diagnosis of acute aortic dissection. Methods The clinical data of 16 patients with acute aortic dissection were retrospectively analyzed. Results 14 cases showed aortic expansion to varying degrees, 8 cases showed the true and false lumen in the aorta, 11 cases showed separation line, 13 cases showed endometrial calcification plaque, 6 cases showed aortic oval. Conclusion CT scan is of great value in the diagnosis of acute aortic dissection.