Comprehensive plaque assessment by coronary CT angiography

Area of Science:

• Cardiology
• Radiology
• Medical Imaging

Background:

• Acute coronary syndromes often result from atherosclerotic plaque rupture or erosion.
• Identifying vulnerable coronary plaques is crucial for reducing cardiovascular disease mortality and morbidity.
• Vulnerable plaques exhibit distinct morphologies compared to stable plaques, offering potential for noninvasive detection.

Purpose of the Study:

• To explore the role of computed tomography (CT) in detecting and characterizing vulnerable coronary plaques.
• To identify morphological and functional features of coronary plaques associated with increased risk of cardiovascular events.

Main Methods:

• Utilizing modern computed tomography (CT) scanners with submillimeter spatial resolution for coronary imaging.
• Analyzing plaque characteristics including volume, CT attenuation, napkin-ring sign, positive remodeling, and spotty calcification.
• Integrating computational fluid dynamics to assess lesion-specific endothelial shear stress and fractional flow reserve.

Main Results:

• CT enables detection, characterization, and quantification of coronary atherosclerotic lesions.
• Specific plaque features like large volume, low attenuation, napkin-ring sign, positive remodeling, and spotty calcification are linked to high cardiovascular event risk.
• Functional parameters derived from CT and computational fluid dynamics add valuable information to plaque assessment.

Conclusions:

• Computed tomography (CT) can identify morphological features of vulnerable coronary plaques.
• Combining morphological and functional CT-derived data may enable noninvasive detection of vulnerable plaques.
• This approach holds promise for the future prevention of acute cardiovascular events.