Carotid Plaque Imaging: Strategies beyond Stenosis

Area of Science:

• Neurology
• Cardiovascular Medicine
• Medical Imaging

Background:

• Atherosclerosis in the carotid bifurcation is common, driven by turbulent blood flow.
• Carotid bulb plaques are a significant cause of debilitating strokes.
• Current management often relies on stenosis degree, potentially underestimating risk from unstable plaques.

Purpose of the Study:

• To evaluate the role of carotid vessel wall imaging in stroke patients.
• To differentiate stable from unstable atherosclerotic plaques.
• To optimize treatment strategies by assessing plaque morphology and vulnerability.

Main Methods:

• Utilizing advanced vessel wall imaging techniques.
• Characterizing atherosclerotic plaque morphology and composition.
• Correlating imaging findings with stroke etiology and patient outcomes.

Main Results:

• Vessel wall imaging identifies unstable plaques missed by stenosis measurements alone.
• Unstable plaque morphology indicates a high risk of future thromboembolic stroke.
• Imaging is crucial for cryptogenic strokes, revealing nonstenotic but vulnerable plaques.

Conclusions:

• Vessel wall imaging enhances stroke risk stratification beyond luminal stenosis.
• Identifying vulnerable carotid plaques guides aggressive treatment, including intervention, even below stenosis thresholds.
• Improved stroke imaging and management reduce individual and public health burdens.