Related Experiment Video
Updated: Mar 5, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
The influence of cardiac function on coronary arterial enhancement at coronary computed tomography angiography: A
Maryam Moradi1, Peiman Hashemi1, Mohammad Momeni1
1Department of Radiology and Imaging, Isfahan University of Medical Sciences, Isfahan, Iran.
Background:
The purpose of this study was to evaluate the influence of ejection fraction (EF) on peak aortic time (PAT) and peak aortic enhancement (PAE) during coronary computed tomography angiography (CTA).
Materials And Methods:
One-hundred and twenty patients (64 men, 56 women) underwent measurement of coronary CTA with a measurement of EF within 3 months of coronary CTA. Pearson's correlation coefficient analysis was used to investigate the relationships between EF, PAT and PAE, and peak attenuation of all coronary arteries.
Results:
The range of EF was (25%-70%) (mean: 55 ± 7.7). The range of PAT and PAE of ascending aorta on bolus test was 13-31 s (mean: 19.3 ± 2) and 153-435 HU (mean: 235 ± 40.6), respectively. Mean peak attenuation of ascending aorta, right coronary artery, left coronary artery, left circumflex artery, and left anterior descending were (561 ± 119), (476 ± 109), (505 ± 108), (467 ± 113), and (473 ± 104), respectively. There was a negative correlation between EF and PAT (r = -0.266, P = 0.003); however, there was no significant correlation between EF and PAE (r = -0.027, P = 0.767). In addition, there was no significant correlation between EF and the peak attenuation of coronary arteries.
Conclusion:
PAT was related to EF, but there was no relationship between PAE and EF. One of the explanation is that the left ventricular EF used for our study was assessed with echocardiography which is used roughly estimation of EF with interval of 5%-10% and may cause confounding results.
More Related Videos
08:13In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
12:15Tissue Preparation Techniques for Contrast-Enhanced Micro Computed Tomography Imaging of Large Mammalian Cardiac Models with Chronic Disease
Published on: February 8, 2022
Related Concept Videos
Imaging Studies for Cardiovascular System V: CT
Imaging 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...
Acute Coronary Syndrome III: Diagnostic Studies
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Cardiac Catheterization I: Pre-Procedure Overview
Pathophysiology of Cardiac Performance