Evaluation and characterization of carotid plaque

Area of Science:

• Neurology
• Radiology
• Vascular Ultrasound

Background:

• Stroke etiology screening requires safe, noninvasive, and cost-effective methods.
• Doppler sonography offers high-resolution imaging and Doppler spectrum analysis for evaluating carotid artery plaque.
• Intraplaque hemorrhage within heterogeneous plaque is a potential precursor to plaque ulceration and stroke.

Purpose of the Study:

• To review the utility of Doppler sonography in characterizing carotid plaque and assessing stroke risk.
• To discuss criteria for distinguishing heterogeneous from homogeneous plaque.
• To highlight the emerging role of carotid wall thickness in atherosclerosis management.

Main Methods:

• Utilizing high-resolution imaging to characterize plaque morphology.
• Applying Doppler spectrum analysis for functional assessment.
• Evaluating carotid wall thickness as a biomarker.

Main Results:

• Heterogeneous plaque, identified via high-resolution ultrasound, is associated with intraplaque hemorrhage.
• Patients with heterogeneous plaques show an increased incidence of neurological symptoms and stroke on follow-up compared to those with homogeneous plaques.
• Carotid wall thickness is emerging as a physiological marker for atherosclerotic disease.

Conclusions:

• Doppler sonography is a valuable tool for stroke etiology screening and plaque characterization.
• Heterogeneous plaque is a significant indicator of increased stroke risk, warranting further long-term studies.
• Carotid wall thickness measurement holds promise for diagnosing and managing atherosclerosis.