摘要
目的研究螺旋CT血管成像对主动脉腔内支架植入术后的评价意义。方法34例主动脉疾病患者(主动脉夹层16例、腹主动脉瘤18例)腔内支架植入术后行螺旋CT血管成像检查(其中多层螺旋CT检查21例,亚秒级螺旋CT检查13例),以容积再现(VR)、表面遮盖显示(SSD)、多平面重组(MPR)、最大密度投影(MIP)多种方式重建。对支架植入术后(支架的通畅、位置、形态,血栓的大小,术后合并症等)情况进行观察、评估。结果34例患者支架植入术后支架段主动脉均通畅,1例支架变形并右侧髂内动脉闭塞;33例支架外血栓形成,1例支架内血栓形成;8例术后假腔缩小,7例腹主动脉瘤者术后瘤体缩小;5例合并内漏。结论螺旋CT血管成像作为一种方便、快捷、无创的检查方法能够较客观地评价主动脉支架植入术后情况,在主动脉支架植入术随访中起着非常重要的作用。
Objective To evaluate the spiral CT angiography in the diagnosis of aortic diseases after endoluminal stent grafting. Methods Thirty-four after endoluminal stent grafting patients with aortic diseases（16 aortic dissection and 18 abdominal aortic aneurysm） were examined by spiral CT angiography（21 with multi-slice CT and 13 with sub-second singleslice CT）. Some reconstruction techniques, including volume rendering （VR）, surface shaded display （SSD）, maximum intensity projection （MIP）, and multi-plane reformation （MPR） were used. The post-operative conditions, such as position and shape of stent, the size of thrombus and complications, were observed and evaluated. Results The aorta of 34 poststent cases were not occluded. The unexpanded stent graft occurred in one case with right internal iliac artery occlusion. Thrombus happened outside stent in 33 cases and in stent in 1 case. The diameter of thrombus decreased in size in 8 cases of post-operative false lumen with dissection and 7 cases of abdominal aortic aneurysm. But the leakage occurred in 5 cases. Conclusion As a fast, convenient and non-invasive method, spiral CT angiography can objectively evaluate the post-operative changes of endovascular exclusion of aortic diseases. It plays an important role in follow-up of aortic endoluminal stent grafting.
出处
《中国介入影像与治疗学》
CSCD
2007年第2期106-109,共4页
Chinese Journal of Interventional Imaging and Therapy
