Related Experiment Video
Updated: May 3, 2026
Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Coronary CT angiography in coronary artery disease: correlation between virtual intravascular endoscopic appearances
1Discipline of Medical Imaging, Department of Imaging and Applied Physics, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Insights
A larger left coronary bifurcation angle is linked to coronary artery disease. Virtual intravascular endoscopy (VIE) reveals irregular plaque appearances correlate with disease severity and plaque composition.
Area of Science:
- Cardiovascular Imaging
- Interventional Cardiology
- Biomedical Engineering
Background:
- Coronary artery disease (CAD) poses a significant global health burden.
- Accurate characterization of coronary plaques is crucial for risk stratification.
- Virtual intravascular endoscopy (VIE) offers a novel intraluminal view of coronary arteries.
Purpose of the Study:
- To investigate the relationship between intraluminal VIE appearances of coronary plaques.
- To correlate VIE findings with left coronary bifurcation angle and plaque components.
- To assess the diagnostic potential of VIE in identifying CAD.
Main Methods:
- Coronary CT angiography was performed on 50 patients with suspected CAD.
- Virtual intravascular endoscopy (VIE) was used to visualize the coronary lumen.
- Left coronary bifurcation angle and plaque characteristics were analyzed.
Main Results:
- Patients with diseased left coronary arteries had significantly larger bifurcation angles (94.3° ± 16.5°) compared to normal (76.5° ± 15.9°).
- Irregular VIE appearances were more common in mixed plaques (10/11) than calcified plaques (5/29).
- An angle >80° was associated with irregular VIE appearances in nearly 50% of patients, suggesting CAD.
Conclusions:
- Intraluminal VIE appearances are directly related to coronary plaque types.
- Left coronary bifurcation angle may serve as an indicator for CAD.
- VIE shows promise in characterizing coronary plaques and assessing CAD.
Abstract:
The aim of this study is to investigate the relationship between intraluminal appearances of coronary plaques and left coronary bifurcation angle and plaque components using coronary CT virtual intravascular endoscopy (VIE). Fifty patients suspected of coronary artery disease undergoing coronary CT angiography were included in the study. The left bifurcation angle in patients with diseased left coronary artery which was measured as 94.3° ± 16.5 is significantly larger than that in patients with normal left coronary artery, which was measured as 76.5° ± 15.9 (P < 0.001). Irregular VIE appearances were found in 10 out of 11 patients with mixed plaques in the left anterior descending (LAD) and left circumflex (LCx), while, in 29 patients with calcified plaques in the LAD and LCx, irregular VIE appearances were only noticed in 5 patients. Using 80° as a cut-off value to determine coronary artery disease, smooth VIE appearances were found in 95% of patients (18/19) with left bifurcation angle of less than 80°, while irregular VIE appearances were observed in nearly 50% of patients (15/31) with left bifurcation angle of more than 80°. This preliminary study shows that VIE appearances of the coronary lumen are directly related to the types of plaques.
More Related Videos
09:32Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
13:07Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
Published on: January 15, 2022
Related Concept Videos
01:25Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
01:28Imaging Studies for Cardiovascular System V: CT
01:30Acute Coronary Syndrome III: Diagnostic Studies
01:27Coronary Artery Disease V: Interprofessional Care
01:20Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
01:26Coronary Artery Disease II: Pathophysiology