Significance of high resolution MRI in the identification of carotid plaque
Yong Sun1, Lei Xu1, Yan Jiang1
1Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China.
Insights
High-resolution magnetic resonance imaging (HR-MRI) can identify vulnerable carotid artery plaque, a key stroke risk factor. This imaging technique helps manage stroke risk by assessing plaque stability and severity.
Area of Science:
- Neurology
- Cardiovascular Imaging
- Radiology
Background:
- Carotid artery plaque stability is crucial in preventing stroke.
- Acute ischemic cerebrovascular disease patients require accurate plaque assessment.
- Identifying high-risk stroke populations is essential for timely intervention.
Purpose of the Study:
- To evaluate the utility of high-resolution magnetic resonance imaging (HR-MRI) in characterizing carotid artery plaque.
- To compare plaque characteristics in symptomatic versus asymptomatic patients.
- To correlate plaque vulnerability with the degree of carotid artery stenosis.
Main Methods:
- Recruitment of patients with acute ischemic cerebrovascular disease.
- Classification into symptomatic (36) and asymptomatic (36) groups.
- Division by stenosis severity (mild, moderate, severe) with 12 patients each.
- High-resolution magnetic resonance imaging (HR-MRI) for plaque analysis.
Main Results:
- Symptomatic patients exhibited a higher proportion of vulnerable plaque than asymptomatic patients (P<0.05).
- Vulnerable plaque proportion increased with the severity of carotid artery stenosis (P<0.05).
- HR-MRI demonstrated superior capability over carotid ultrasound in identifying and quantifying plaque components.
Conclusions:
- Carotid HR-MRI effectively distinguishes and quantifies carotid artery plaque components.
- HR-MRI aids in assessing plaque vulnerability and its association with stroke risk.
- This imaging modality can support hierarchical stroke risk management strategies.
Abstract:
The stability of carotid artery plaque serves a key role in the occurrence of stroke. The present study was based on the recruitment of patients with acute ischemic cerebrovascular disease. High-resolution magnetic resonance imaging (HR-MRI) was used to identify the nature of carotid artery plaque, and the results were then used to manage the high-risk group of stroke. The patients were divided equally into a symptomatic group (36 cases) and an asymptomatic group (36 cases). According to the degree of carotid artery stenosis, the patients were divided into mild, moderate and severe stenosis groups, each group comprising 12 patients, and HR-MRI was performed. The proportion of patients with vulnerable plaque in the symptomatic group was higher compared with that in the asymptomatic group (P<0.05). The more severe the stenosis, the higher the proportion of vulnerable plaque that was identified (P<0.05). Compared with carotid ultrasound, HR-MRI was indicated to have the capability to both identify and quantify the different components in the plaque, allowing an assessment of its properties. In conclusion, the present study demonstrated that carotid HR-MRI is able to distinguish and quantify the different components of plaque, which may prove to be helpful for the hierarchical management of a population at high risk of stroke.
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