Roles of high-resolution magnetic resonance imaging in the diagnosis and treatment of vertebrobasilar dissecting aneurysms
10.3969/j.issn.1672-5921.2017.07.002
- VernacularTitle:高分辨率核磁共振在椎-基底动脉夹层动脉瘤诊治中的作用
- Author:
Jingwei LI
;
Lisong BIAN
;
Guilin LI
;
Hongqi ZHANG
;
Feng LING
- Keywords:
High-resolution magnetic resonance imaging;
Vertebrobasilar dissecting aneurysm;
Stability of aneurysmal wall;
Recurrence
- From:
Chinese Journal of Cerebrovascular Diseases
2017;14(7):340-344
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the roles of high-resolution magnetic resonance imaging (HR-MRI) in the diagnosis and treatment of vertebrobasilar dissecting aneurysms (VBDA).Methods From January 2016 to December 2016,62 patients with VBDA admitted to Xuanwu Hospital,Capital Medical University using 3.0 T HR-MRI (3D-TOF-MRA,3D-T1WI,and 3D-T1WI+C sequence) and diagnosed by DSA were analyzed retrospectively.They were divided into either an asymptomatic group (n=18) or a symptomatic group (n=44) according to their medical histories.Their clinical features,imaging features,and the relationship with prognosis were analyzed.Results HR-MRI revealed that the double lumen sign/intimal flap accounted for 27.8% (n=5) and 54.5% (n=24) respectively in the asymptomatic group and symptomatic group.The intramural hematoma accounted for 22.2% (n=4) and 43.2% (n=19) respectively in both groups.The enhancement of aneurysmal wall accounted for 33.3% (n=6) and 77.3% (n=34) in the asymptomatic group and symptomatic group.There were significant differences in the above features between the two groups (all P<0.05).In the symptomatic group,18.2% (n=8) of patients had aneurysm recurrence,which was significantly higher than the asymptomatic group (5.6%,n=1).The difference between the two groups was statistically significant (P<0.05).Conclusions HR-MRI can better reveal the lesion characteristics of VBDA.The rates of aneurysmal wall enhancement and recurrence in symptomatic VBDAs are higher,which indicates that HR-MRI can assess the stability of the aneurysmal wall and identify the prognosis to a certain extent.
