椎基底动脉延长扩张症的影像学分析(附5例报告)

Imaging Features of Vertebrobasilar Dolichoectasia(Report of 5 cases)

目的分析椎基底动脉延长扩张症(vertebrobasilar dolichoectasia,VBD)CT、CTA、MRI的影像学特点,以提高对VBD的认识。方法 5例VBD患者均接受CT、CTA及MRI检查,其中男3例,女2例,年龄57～71岁,平均61.5岁。采用容积再现(VRT)、多平面重组(MPR)和非增强磁共振血管成像(MRA)3种方式重组图像。结果5例基底动脉(BA)管腔内径均≥0.45 cm,2例BA的高度(H)为3,2例H为2,1例H为1;2例BA的位置(P)为3,2例P为2。结论 CT薄层扫描可作为筛查VBD的基本检查,CTA及MRI可较好反映BA的血管及脑干病变情况,为临床诊断和治疗VBD提供全面、可靠的影像学依据。

Objective To improve the understanding of the VBD by analyzing the imaging characteristic of the vertebrobasilar dolichoeetasia（VBD）. Methods The 5 VBD patients including 3 males and 2 females, aged 57 to 71 （ averaged 61.5） received the examinations of CT, CTA, and MRI. The VRT, MPR and MRA had been adopted to reconstruct the image. Results The lumen diameters of the BA were larger than 0.45 cm（n =5） ; there were H =3（n =2） ,H =2（n =2）,H=l（n=l）,P=3（n=2）,P=2（n=2） in BA. Conclusion CT can be used as the basic examination for screening VBD. CTA and MRI can preferably reflect the pathological changing situation of the brain stem and the blood vessels of the BA, and provide comprehensive and reliable imaging evidence for the clinical diagnosis and treatment of the VBD.