A Computational Fluid-Structure Interaction Study for Carotids With Different Atherosclerotic Plaques.

Area of Science:

• Cardiovascular Research
• Biomedical Engineering
• Medical Imaging Analysis

Background:

• Atherosclerosis involves plaque buildup in carotid arteries, with soft, fibrous, and calcific types.
• Current computational studies often rely on non-standard medical images for plaque analysis, limiting clinical applicability.

Purpose of the Study:

• To introduce a novel geometric tool for reconstructing plausible carotid artery plaques from standard medical images.
• To conduct 3D fluid-structure interaction (FSI) simulations to compare hemodynamic and structural factors in patients with diverse plaque types.

Main Methods:

• Development of a geometric tool for plaque reconstruction using standard imaging data.
• Implementation of 3D fluid-structure interaction (FSI) simulations for 15 patients.
• Analysis of fluid-dynamic and structural quantities across different plaque typologies.

Main Results:

• The study successfully reconstructed plausible carotid artery plaques from standard medical images.
• Fluid-structure interaction simulations revealed significant differences in hemodynamic and structural parameters based on plaque type.
• Plaque morphology and mechanical properties were identified as critical determinants of plaque vulnerability.

Conclusions:

• The proposed geometric tool enables plausible carotid artery plaque reconstruction from widely available standard images.
• Plaque composition and mechanical characteristics are crucial factors influencing the vulnerability of atherosclerotic plaques.
• This research advances the understanding of atherosclerosis by integrating imaging, computational modeling, and biomechanics.