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• CLINICAL ARTICLE •
The reasearch of basilar artery based on high-resolution magnetic resonance imaging in patients with posterior circulation ischemic attack
ZHOU Yingxue  CUI Yingzhe  NAN Dong  CHEN Yanfei  LIU Pengfei 

Cite this article as: Zhou YX, Cui YZ, Nan D, et al. The reasearch of basilar artery based on high-resolution magnetic resonance imaging in patients with posterior circulation ischemic attack[J]. Chin J Magn Reson Imaging, 2021, 12(2): 15-18, 23. DOI:10.12015/issn.1674-8034.2021.02.004.


[Abstract] Objective The differences of basilar artery vessel wall between frequent patients and non-frequent patients with transient ischemic attack (TIA) were analyzed using high-resolution magnetic resonance imaging (HR-MRI). Materials andMethods The patients were scanned by three-dimension time of flight magnetic resonance angiography (3D-TOF-MRA) of the head and HR-MRI of basilar artery, and the patients with plaques were enrolled in the study. According to the frequency of TIA within 24 hours, the patients were divided into the frequent group (≥2) and the non-frequent group (＜2). The plaque morphological indexes, degree of stenosis, remodeling index, plaque distribution and clinical characteristics between the two groups were analyzed.Results Sixty-eight patients with TIA (38 cases in the frequent group and 30 cases in the non-frequent group) had a total of 184 plaques (108 in the frequent group and 76 in the non-frequent group). At the maximal-lumen-narrowing site, the plaque morphological indexes in the frequent group were significantly different from those in the non-frequent group (P＜0.05). The degree of stenosis and remodeling index in the frequent group were higher than those in the non-frequent group, and the differences were statistically significant (P＜0.05). The plaques located at ventral wall of the frequent group (38.0%) accounted for a higher proportion as compared with the non-frequent group (22.4%)(P=0.025), and the plaques located at dorsal wall of the frequent group (17.6%) accounted for a lower proportion as compared with the non-frequent group (35.5%)(P=0.006). The proportion of lateral wall plaques in the frequent group (44.4%) was similar to that in the non-frequent group (42.1%), with no statistically significant difference (P=0.753). The clinical characteristics had no statistically significant differences between the two groups (P＞0.05).Conclusions Most of the plaques are distributed on the ventral side in the frequent group and on the dorsal side in the non-frequent group, and the proportion of lateral plaques are similar between the two groups. In the frequent group, plaque burden is higher, artery stenosis is more severe, and the remodeling index is higher. Plaques in the non-frequent group are relatively more stable.
[Keywords] high-resolution；magnetic resonance imaging；plaque；atherosclerotic；transient ischemic attack

ZHOU Yingxue   CUI Yingzhe   NAN Dong   CHEN Yanfei   LIU Pengfei*  

Department of Magnetic Resonance, the First Affiliated Hospital of Harbin Medical University, Harbin 150001, China

Liu PF, E-mail: liup.fei@163.com

Conflicts of interest   None.

Received  2020-07-02
Accepted  2020-08-04
DOI: 10.12015/issn.1674-8034.2021.02.004
Cite this article as: Zhou YX, Cui YZ, Nan D, et al. The reasearch of basilar artery based on high-resolution magnetic resonance imaging in patients with posterior circulation ischemic attack[J]. Chin J Magn Reson Imaging, 2021, 12(2): 15-18, 23. DOI:10.12015/issn.1674-8034.2021.02.004.

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