Carotid plaque imaging and the risk of atherosclerotic cardiovascular disease
Guangming Zhu1, Jason Hom2, Ying Li1,3
1Department of Radiology, Neuroradiology Section, Stanford University School of Medicine, Palo Alto, CA, USA.
Insights
Advanced imaging like CT and MRI can detect vulnerable carotid artery plaque features, improving atherosclerotic cardiovascular disease (ASCVD) risk prediction beyond routine ultrasound. These techniques aid in understanding plaque components and their link to cardiovascular events.
Area of Science:
- Cardiovascular Imaging
- Atherosclerosis Research
- Vascular Biology
Background:
- Carotid artery plaque is a key indicator of atherosclerosis and a predictor of future atherosclerotic cardiovascular disease (ASCVD).
- ASCVD includes coronary, cerebrovascular, and peripheral arterial diseases, posing significant health risks.
- Traditional ultrasound has limitations in assessing plaque vulnerability.
Purpose of the Study:
- To review advanced imaging techniques for detecting vulnerable carotid plaque components.
- To explore the correlation between imaging features and histological changes in carotid plaques.
- To assess the utility of imaging in predicting cardiovascular events and risk scores.
Main Methods:
- Review of studies utilizing advanced imaging modalities like computerized tomography (CT) and magnetic resonance imaging (MRI).
- Investigation of techniques such as nuclear imaging and intravascular ultrasound (IVUS).
- Analysis of correlations between specific plaque imaging features (IPH, LRNC, FC, calcification) and histological findings.
Main Results:
- CT and MRI demonstrate superior potential over routine ultrasound in identifying vulnerable carotid plaque features.
- Specific imaging features like intraplaque hemorrhage (IPH) and lipid-rich necrotic core (LRNC) are linked to plaque vulnerability.
- Imaging-derived plaque characteristics show correlation with histological changes and cardiovascular event risk.
Conclusions:
- Advanced imaging techniques offer enhanced capabilities for characterizing carotid plaque vulnerability.
- These methods improve the prediction of cardiovascular risk by detailing plaque composition.
- Further research into nuclear imaging and IVUS may provide deeper insights into vulnerable plaque features.
Abstract:
Carotid artery plaque is a measure of atherosclerosis and is associated with future risk of atherosclerotic cardiovascular disease (ASCVD), which encompasses coronary, cerebrovascular, and peripheral arterial diseases. With advanced imaging techniques, computerized tomography (CT) and magnetic resonance imaging (MRI) have shown their potential superiority to routine ultrasound to detect features of carotid plaque vulnerability, such as intraplaque hemorrhage (IPH), lipid-rich necrotic core (LRNC), fibrous cap (FC), and calcification. The correlation between imaging features and histological changes of carotid plaques has been investigated. Imaging of carotid features has been used to predict the risk of cardiovascular events. Other techniques such as nuclear imaging and intra-vascular ultrasound (IVUS) have also been proposed to better understand the vulnerable carotid plaque features. In this article, we review the studies of imaging specific carotid plaque components and their correlation with risk scores.
Related Concept Videos
01:25Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
01:27Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
01:30Atherosclerosis I: Introduction
01:28Imaging Studies for Cardiovascular System V: CT
01:30Coronary Artery Disease I: Introduction
01:21Imaging Studies for Cardiovascular System IV: CMRI