螺旋 CT 和三维 CTA 血管造影发展迅速,已成为评价主动脉瘤和夹层动脉瘤血管内介入治疗效果的主要影象学方法。它的主要优点是:能够在术前提供主动脉及其主要分支的良好解剖图像,支架植入后可观察支架周围的微小渗漏,显示急性夹层动脉瘤内膜撕裂片的解剖细节等。本文根据作者在美国斯坦福大学5年的临床经验,报道螺旋 CT 在主动脉瘤介入治疗中的检查技术和应用。一、胸主动脉瘤的血管内修复螺旋 CT 可用于评价动脉瘤的构型,动脉瘤近端和远端颈部的尺寸,显示大的血管分支,帮助确定植入支架的尺寸。为获得密度一时间曲线以确定扫描延迟时间,先在主动脉弓水平进行预扫描。经右肘前静脉以每秒4～5ml的速度注入非离子型造影剂15ml,8秒以后,以主动脉弓水平为兴趣区,使用0mm 扫描间隔(固定层面), Spiral CT and three-dimensional CTA angiography has developed rapidly, has become the evaluation of aortic aneurysm and dissecting aneurysm endovascular interventional treatment of major imaging methods. Its main advantage is the ability to provide a good anatomic image of the aorta and its major branches preoperatively, to see tiny leaks around the stent after stent implantation, and to provide anatomical details of the intima-dissected tear in an acute dissecting aneurysm. Based on the author’s five years of clinical experience at Stanford University in the United States, this article reports on techniques and applications of spiral CT in the interventional treatment of aortic aneurysms. First, endovascular repair of thoracic aortic aneurysms Spiral CT can be used to assess the configuration of the aneurysm, the size of the aneurysm proximal and distal neck, revealing large blood vessel branches, and help determine the size of the implanted stent. To obtain a density-time curve to determine the scan delay time, pre-scan at the aortic arch level first. The right elbow vein at 4 ~ 5ml per second rate of injection of non-ionic contrast agent 15ml, 8 seconds later, the aortic arch level as the area of ​​interest, the use of 0mm scanning interval (fixed level)