双能量CT血管成像在颅内动脉瘤钛夹夹闭术后随访中的应用

目的探讨双能量CTA(DECTA)在颅内动脉瘤夹闭术后随访中的价值。方法对77例临床确诊为颅内动脉瘤并接受动脉瘤钛夹夹闭术的患者行DECTA检查,将原始数据传至后处理工作站进行图像重组,采用原始轴位图像与重建图像相结合的方式进行综合分析。结果 77例中,DECTA均能清晰显示动脉瘤夹闭情况、动脉瘤钛夹及载瘤动脉与其他颅内主要大血管的通畅情况;共84个动脉瘤接受手术夹闭,其中颅内动脉瘤完全夹闭82个,均未发生移位,动脉瘤颈残留2个;3例动脉瘤夹闭术后其他部位出现新发病灶,1例载瘤动脉血管纤细狭窄。结论 DECTA可作为颅内动脉瘤患者动脉瘤钛夹夹闭术后准确、无创的影像学随访方法。

Application of dual-energy CT angiography in the follow-up of clipped intracranial aneurysm

Objective To assess the value of dual-energy CT angiography (DECTA) in the follow-up of postoperative intracranial aneurysms. Methods Seventy-seven patients diagnosed as intracranial aneurysm and underwent implemented aneurysm clipping with titanium clips were enrolled. The raw data of CTA were acquired and transmitted to the workstation for image post-processing. Comprehensive analysis and evaluation was made on original axial images and reconstructed images. Results DECTA of 77 patients was all clearly showed the aneurysm, clips and the patency of parent artery. Among 84 aneurysms, there were 82 aneurysms completely occluded without shifting, 2 with residual aneurysm neck. Among 77 patients, new aneurysms of the other part were detected in 3 patients after clipping, while slight stenosis of aneurysm carrying artery was noticed in 1 patient. Conclusion DECTA can be used as an accurate and noninvasive method for postoperative follow-up for patients with aneurysms after clipping with titanium clips.