The characteristic of acute internal carotid artery occlusion on vessel wall MRI and its correlation with different watershed infarction subtypes
10.3969/j.issn.1002-1671.2025.10.004
- VernacularTitle:急性颈内动脉闭塞的血管壁MRI特征与不同分水岭梗死亚型的相关性研究
- Author:
Chengyan XIANG
1
;
Maoxue WANG
;
Yin ZHANG
;
Huihui MENG
;
Qiong YAO
Author Information
1. 南京医科大学附属逸夫医院医学影像科,江苏 南京 211112
- Publication Type:Journal Article
- Keywords:
internal carotid artery;
occlusion;
watershed infarction;
atherosclerosis;
magnetic resonance imaging;
Circle of Willis
- From:
Journal of Practical Radiology
2025;41(10):1609-1613
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between the intraluminal characteristics of the occlusion segment and the degree of the primary collateral circulation(Circle of Willis)opening in patients with acute internal carotid artery occlusion(ICAO)and the occurrence of different subtypes of ipsilateral intracranial watershed infarction(WSI).Methods A total of 63 patients with unilateral acute ICAO accompanied by ipsilateral intracranial WSI were retrospectively included and divided into the internal watershed infarction(IWSI)group and the cortical watershed infarction(CWSI)group.The intraluminal characteristics of the occlusion segment and the degree of the Circle of Willis opening were analyzed using vessel wall magnetic resonance imaging(VW-MRI).Multivariate binary logistic regression analysis was employed to identify independent predictive indicators for the occurrence of CWSI.Results There was no significantly statistical difference in the occlusion range between the two groups.The range of intraluminal high signal involvement,the ratio of intraluminal relative highest signal,the incidence of high signal at the end of occlusion,and the degree of the Circle of Willis opening in the CWSI group were higher than those in the IWSI group(P<0.001).The range of intraluminal high signal involvement,high signal at the end of occlusion,and the degree of the Circle of Willis opening were identified as independent predictive factors for CWSI.Conclusion VW-MRI analysis of the intraluminal characteristics of the occlusion segment and the degree of the Circle of Willis opening can help to elucidate the mechanisms underlying the occurrence of IWSI/CWSI and can provide assistance in formulating etiology-based treatment strategies for clinical practice.
