Heiberg E, Wolverson M K, Sundaram M, Shields J B
J Comput Assist Tomogr. 1985 Jan-Feb;9(1):78-83. doi: 10.1097/00004728-198501000-00016.
In an attempt to better define criteria for the diagnosis of atherosclerotic aneurysm (AA) and aortic dissection (AD) using CT the scans of 60 documented aortic lesions were reviewed. Hyperdensity of the aortic wall at multiple levels was found to be specific for AD. Central displacement of atheromatous calcification and deformity of the residual aortic lumen were more common in AD than in AA. Peripheral location of aortic wall calcification and a round aortic lumen in cross section were more common in AA than in AD. Central calcification in AA appeared to be associated with a serious short-term prognosis in several cases. A thickened aortic wall of low density was more common in AA than in acute AD, but this relationship was not significant when acute and chronic ADs were considered as a single group. Wall thickness correlated with cross-sectional size of the aortic lesion in AA but not in AD. The mean maximum wall thickness exceeded 1 cm for both AA and AD and was not significantly different between the two; contrary statements have been made in the angiographic literature.
为了更好地确定使用CT诊断动脉粥样硬化性动脉瘤（AA）和主动脉夹层（AD）的标准，我们回顾了60例有记录的主动脉病变的扫描结果。发现主动脉壁在多个层面的高密度对AD具有特异性。动脉粥样硬化钙化的中心移位和残余主动脉腔的畸形在AD中比在AA中更常见。主动脉壁钙化的外周位置和横截面呈圆形的主动脉腔在AA中比在AD中更常见。在一些病例中，AA中的中心钙化似乎与严重的短期预后相关。低密度的增厚主动脉壁在AA中比在急性AD中更常见，但当将急性和慢性AD视为一个单一组时，这种关系并不显著。在AA中，壁厚度与主动脉病变的横截面大小相关，但在AD中不相关。AA和AD的平均最大壁厚度均超过1cm，两者之间无显著差异；血管造影文献中有相反的说法。
