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Chinese Journal of Cerebrovascular Diseases(Electronic Edition) ›› 2023, Vol. 17 ›› Issue (06): 549-556. doi: 10.11817/j.issn.1673-9248.2023.06.004

• Clinical Research • Previous Articles    

HRMR-VWI study on the relationship between the components and characteristics of intracranial atherosclerotic plaque and ischemic stroke

Ying Liu, Lijun Ma, Baojun Wang, Xiaolin Liu, Shengting Chai, Ning Su()   

  1. Department of Imaging, Baotou Central Hospital, Baotou 014000, China
    Department of Neurology, Baotou Central Hospital, Baotou 014000, China
  • Received:2023-03-26 Online:2023-12-01 Published:2024-01-12
  • Contact: Ning Su

Abstract:

Objective

To analyze the correlation between the components and characteristics of intracranial atherosclerotic plaques and ischemic stroke by high-resolution MRI vascular wall imaging (HRMR-VWI).

Methods

78 patients with intracranial atherosclerotic stenosis in the Department of Neurology of Baotou Central Hospital from December 2020 to September 2021 were scanned by HRMR-VWI. The detected intracranial plaques were divided into responsible plaques (67) and non-responsible plaques (125), and the differences in plaque composition and characteristics between the two groups were compared. According to the history of cerebral infarction, the patients were divided into three groups: acute / subacute cerebral infarction group (34 cases), chronic cerebral infarction group (18 cases), and non-cerebral infarction group (26 cases). The differences in the composition and characteristics of responsible plaque among the three groups were compared. Statistical analysis was conducted using SPSS 21.0 software, and the relationship between plaque composition, characteristics, and ischemic stroke was analyzed through multiple Logistic regression. The correlation with the National Institutes of Health stroke scale (NIHSS) was analyzed through Spearman correlation, and the significance test criteria were used α=0.05.

Results

In the responsible plaque group, the rate of intraplaque hemorrhage (IPH) (P<0.001), the rate of thrombus (P<0.001), the rate of significant enhancement (P=0.010), the rate of moderate to severe stenosis (P<0.001), and the plaque load (P<0.001) were significantly higher than those in the non-responsible plaque group, and the differences were statistically significant. The rate of IPH (P=0.013), the rate of thrombus (P=0.001), and the plaque load (P<0.001) of responsible plaques in the acute/subacute cerebral infarction group were significantly higher than those in the non-cerebral infarction group, and the differences were statistically significant. IPH (rs=0.348, P=0.004), thrombus (rs=0.373, P=0.002), and plaque load (rs=0.360, P=0.003) were all positively correlated with NIHSS score.

Conclusion

The presence of IPH and thrombus is closely related to responsible plaque and ipsilateral stroke. A large plaque load can increase the risk of ischemic stroke events, and the severity of stroke may be more severe and the prognosis worse.

Key words: High-resolution MRI vessel wall imaging, Intracranial atherosclerosis, Intra-plaque hemorrhage, Plaque loading

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