Evaluation of high-resolution MRI in patients with posterior circulation ischemic stroke caused by vertebral artery dissection
10.3969/j.issn.1002-1671.2024.04.005
- VernacularTitle:高分辨率MRI对椎动脉夹层致后循环缺血性卒中患者的评估
- Author:
Qiujiao WANG
1
;
Zhihong CAO
;
Yifeng LUO
Author Information
1. 扬州大学医学院宜兴临床学院(宜兴市人民医院)放射科,江苏 宜兴 214200
- Keywords:
vertebral artery dissection;
stroke;
high-resolution magnetic resonance imaging
- From:
Journal of Practical Radiology
2024;40(4):535-538
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the imaging features of posterior circulation ischemic stroke caused by vertebral artery dissection(VAD)by high-resolution magnetic resonance imaging(HR-MRI).Methods A total of 56 patients with highly suspected VAD were selected.According to HR-MRI characteristics,these patients were divided into ischemic stroke group(n=23)and control group(n=33).The correlation between imaging features and risk factors in the two groups was analyzed.Results The proportions of intramural hematoma,tumor-like dilatation,and degree of vessel wall enhancement in the ischemic stroke group were significantly higher than those in the control group,and the difference was statistically significant(P<0.05).However,there was no statistical significance in the double-chamber sign and intimal valve sign(P=0.075).Correlation analysis showed that the effective lumen index was significantly negatively correlated with the incidence of posterior circulation ischemic stroke in patients with VAD(r=-0.721,P<0.05),and the area under the curve(AUC)of the effective lumen index reached 0.935.Conclusion The effective features of HR-MRI in the diagnosis of posterior circulation ischemic stroke caused by VAD include intramural hematoma,tumor-like dilatation,degree of vessel wall enhancement,and reduction of effective lumen index,which are helpful for the management and prediction of patients with VAD.
