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Review
. 2024 Oct 30;10(11):1730-1743.
doi: 10.3390/tomography10110127.

A Review of Factors Affecting Radiation Dose and Image Quality in Coronary CTA Performed with Wide-Detector CT

Yihan Fan  1 , Tian Qin  1 , Qingting Sun  1 , Mengting Wang  2 , Baohui Liang  1
Affiliations
Review

A Review of Factors Affecting Radiation Dose and Image Quality in Coronary CTA Performed with Wide-Detector CT

Yihan Fan et al. Tomography. .

Abstract

Compared with traditional invasive coronary angiography (ICA), coronary CT angiography (CCTA) has the advantages of being rapid, economical, and minimally invasive. The wide-detector CT, with its superior temporal resolution and robust three-dimensional reconstruction technology, thus enables CCTA in patients with high heart rates and arrhythmias, leading to a high potential for clinical application. This paper systematically summarizes wide-detector CT hardware configurations of various vendors routinely used for CCTA examinations and reviews the effects of patient heart rate and heart rate variability, scanning modality, reconstruction algorithms, tube voltage, and scanning field of view on image quality and radiation dose. In addition, novel technologies in the field of CT applied to CCTA examinations are also presented. Since this examination has a diagnostic accuracy that is highly consistent with ICA, it can be further used as a routine examination tool for coronary artery disease in clinical practice.

Keywords: coronary computed tomography angiography; image quality; radiation dose; wide-detector CT.

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Conflict of interest statement

The authors have no conflicts of interest to declare.

Figures

Figure 1
Figure 1
Diagram showing factors affecting image quality versus radiation dose for CCTA.
Figure 2
Figure 2
Right coronary CTA images and dose reports of patients with different heart rates. ((A,C) A patient with a heart rate of 228 bpm; (B,D) A patient with a heart rate of 71 bpm).
Figure 3
Figure 3
Right coronary CTA images with different tube voltages. ((A) A patient with a tube voltage of 100 kV; (B A patient with a tube voltage of 120 kV.).
Figure 4
Figure 4
Right coronary CTA images with different SFOV. ((A) A patient with small SFOV; (B) A patient with large SFOV.).
See this image and copyright information in PMC

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