螺旋CT血管造影三维成像在脑动脉瘤诊断中的应用

The clinical application of MSCT three-dimensional angiography in the diagnosis of cerebral aneurysm

目的:探讨螺旋CT血管造影(SCTA)三维成像及其在脑动脉瘤诊断中的作用。方法:分析23例经手术或血管造影证实的脑动脉瘤,将其术前行螺旋CT血管造影容积扫描所得数据传输到工作站,用表面遮盖法(SSD)、最大密度投影(MIP)等技术进行3D重建。结果:23例患者,共检出脑动脉瘤25个,其中2例为2个。所示病例经SSD、MIP重建处理后能够全面直观地显示动脉瘤的大小、形态、位置,能多方位观察瘤体与载瘤动脉的空间解剖关系。结论:运用多种三维成像技术,能充分显示动脉瘤的空间解剖结构,可部分代替传统脑血管造影,并可作为该病的临床筛选手段。

Objective：To discuss the technique and assess the clinical value of MSCT angiography in the diagnosis of cerebral aneurysm. Methods： Twenty-three cases with cerebral aneurysms were examined by MSCT. The SSD,MIP were applied on them. All cases were confirmed by DSA or operations. Results： Of the 23 patients,25 aneurysms were detected by MSCT. There were 2 patients with 2 lesions. Three-dimensional reconstructed images not only demonstrated the location, shape, size of aneurysms but also showed the relationship between the aneurysms and corresponding arteries. Conclusion： MSCT can not only provide more information of the cerebral aneurysms,but also artly replace DSA,and become a choice of imaging modality in cerebral aneurysms.