椎基底动脉扩张延长症的CT血管成像  

CT Angiography of Vertebrobasilar Dolichoectasia

作　　者：李润根 郑少锐[2] 孙兴旺[3] 

机构地区：[1]兵器工业五二一医院放射科,陕西西安710065 [2]固原市人民医院放射科,宁夏固原756000 [3]西安交通大学医学院第一附属医院影像中心,陕西西安710065

出　　处：《中国医学影像学杂志》2013年第9期693-696,共4页Chinese Journal of Medical Imaging

摘　　要：目的探讨椎基底动脉扩张延长症(VBD)在CT血管成像(CTA)上的表现。资料与方法回顾性分析47例VBD患者的CTA资料。采用16层螺旋CTA技术获取容积重组(VR)和最大密度投影(MIP)图像,分别测量椎动脉(VA)颅内段和基底动脉(BA)的直径、长度、偏移度,总结VBD的影像学特点。结果 47例VBD中,共观测到单纯BA式(8例,17.0%)、BA+单侧VA式(30例,63.8%)、BA+双侧VA式(5例,10.6%)、单侧VA式(2例,4.3%)和双侧VA式(2例,4.3%)5种表现形式,单侧VA颅内段向对侧偏移并骑跨为一种特殊形式。结论 CTA能直观、准确地显示VBD的各种形态学特征,可以为临床提供可靠的诊断依据。Purpose To explore the imaging features of vertebrobasilar dolichoectasia （VBD） on CT angiography. Materials and Methods Forty-seven patients with VBD underwent CT angiography （CTA） on a 16-slice scanner, then volume rendering （VR） and maximum intensity projection （M1P） reconstruction images were retrospectively reviewed. Diameter, length and deflection of vertebral and basilar artery were measured in accordance with reference standard. Imaging features were induced. Results Among 47 cases of VBD, there were 5 kinds of VBD as tbllows： pure BA in 8 cases （17.0%）, BA with unilateral VA in 30 cases （63.8%）, BA with bilateral VA in 5 cases （10.6%）, unilateral VA in 2 cases （4.3%）, and bilateral VA in 2 cases 14.3%）. A special type was unilateral VA shifted opposite and overriding. Conclusion CTA has the ability to display any kind of VBD directly and accurately, which provides reliable information to clinical diagnosis.

关 键 词：椎基底动脉扩张延长症 体层摄影术 螺旋计算机 脑血管造影术 

分 类 号：R445.3[医药卫生—影像医学与核医学] R322.121[医药卫生—诊断学]