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Updated: Sep 28, 2026

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
Published on: January 15, 2022
Morphologic rather than functional or mechanical sonographic parameters of the brachial artery are related to
Matthias Frick1, Severin P Schwarzacher, Hannes F Alber
1Division of Cardiology, Department of Medicine, University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria.
Insights
Brachial artery wall cross-sectional area and intima-media thickness are linked to coronary artery disease. These morphologic measures, unlike functional or mechanical ones, accurately estimate coronary atherosclerotic risk.
Area of Science:
- Cardiovascular imaging
- Vascular biology
- Diagnostic cardiology
Background:
- Flow-mediated vasodilation (FMD) of the brachial artery (BA), carotid intima-media thickness (IMT), and aortic distensibility are known indicators of coronary artery disease (CAD).
- Noninvasive assessment of BA parameters may offer insights into CAD presence.
Purpose of the Study:
- To investigate the association between coronary atherosclerosis and noninvasively assessed functional, morphologic, and mechanical parameters of the brachial artery.
- To identify which brachial artery sonographic parameters are most accurate in estimating coronary atherosclerotic risk.
Main Methods:
- High-resolution ultrasound of the brachial artery was performed in 117 male patients undergoing coronary angiography.
- Coronary artery disease was defined as >=30% diameter stenosis in >=1 major branch.
- Brachial artery wall cross-sectional area (WCSA) was calculated from resting diameter and IMT.
Main Results:
- Patients with CAD exhibited significantly greater BA-WCSA and IMT compared to non-CAD patients.
- Flow-mediated vasodilation and distensibility did not differ significantly between groups.
- Logistic regression analysis revealed that only WCSA and IMT independently correlated with the presence of CAD, after adjusting for various risk factors.
Conclusions:
- Morphologic parameters of the brachial artery, specifically IMT and WCSA, are associated with the presence of coronary artery disease.
- These morphologic measures appear to be more accurate than functional or mechanical BA parameters for estimating coronary atherosclerotic risk.
Objectives:
The purpose of this study was to determine the relationship among coronary atherosclerosis and functional, morphologic, and mechanical parameters assessed noninvasively within the brachial artery (BA).
Background:
Flow-mediated vasodilation (FMD) of the BA, intima-media thickness (IMT) of the carotid artery, and distensibility of the aorta have been correlated with the presence of coronary artery disease (CAD).
Methods:
The BA was examined with high-resolution ultrasound (13 MHz) in 117 male patients, in whom coronary angiography was performed. Coronary artery disease (> or =30% diameter stenosis in > or =1 major branch) was found in 84 patients, and 33 patients had smooth coronary arteries (non-CAD). Wall cross-sectional area (WCSA) was calculated from resting diameter and IMT.
Results:
The BA-WCSA (5.3 +/- 1.5 mm(2) vs. 4.4 +/- 1.4 mm(2), p = 0.002) and IMT (0.37 +/- 0.07 mm vs. 0.31 +/- 0.07 mm, p < 0.001) were significantly greater in patients with CAD compared with non-CAD patients. Flow-mediated vasodilation and distensibility were similar among groups. Using logistic regression analyses adjusting for age, positive family history, hypertension, hypercholesterolemia, smoking, FMD, and distensibility, only WCSA (p < 0.01) and IMT (p < 0.001) correlated independently with the presence of CAD.
Conclusions:
Morphologic but not functional and mechanical parameters of the BA are associated with the presence of CAD. Among BA sonographic parameters, IMT and WCSA seem to be the most accurate ones for the estimation of coronary atherosclerotic risk.
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