Vertebrobasilar Dolichoectasia:MRI Imaging Features and Risks Assessment of Posterior-circulation Cerebral Infarction
HUANG Wen-cai
WU Qian
ZOU Jia-ni
CHEN Xin-jian
LI Guo-xiong
Abstract：Objective To explore major factors which caused blood stagnation in vertebrobasilar artery and cerebral infarction in posterior-circulation region of vertebrobasilar dolichoectasia (VBD) through magnetic resonance imaging (MRI) analysis.Methods A total of 22 patients confirmed with VBD were included into this study,there were 16 males and 6 females,the average age was (61.7±10.8) years (rang,39-79 years).The basilar artery (BA) maximum diameter was measured on MRI images,BA height scores,BA location scores and BA total scores were recorded.The relationship between BA indexes and cerebral infarction were evaluated respectively by Mann-Whitney U test.Results Among 22 patients,20 cases had a history of hypertension,8 cases occurred old or acute infarction in the posterior circulation area,2 case were BA fusiform aneurysm,11 cases presented "bright-blood-vessel sign" of vertebrobasilar artery on fluid attenuation inversion recovery (FLAIR),T1-weighted imaging (T1WI).Between bright-blood-vessel sign positive group and negative group,there were statistically different in BA maximum diameter and BA location scores (P<0.05),and significantly different in BA total scores (P<0.01).Between posterior circulation cerebral infarction positive group and negative group,there were significantly different in BA location scores and BA total scores (P<0.05).Conclusion For patients with VBD,BA position offset probably contribute to the posterior circulation cerebral infarction.
Keywords：Vertebrobasilar dolichoectasiaMagnetic resonance imagingMagnetic resonance angiography
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 165-169 )