Estimated Radiation Dose Associated With Cardiac CT Angiography

Abstract

With the introduction of 64-slice computed tomography (CT), cardiac CT angiography (CCTA) has emerged as a useful diagnostic imaging modality for the assessment of coronary artery disease. It is considered appropriate for selected indications (eg, in patients with a low-to-intermediate pretest probability for obstructive coronary artery disease).^1-3 In addition, CCTA has been proposed to be useful in the rapid evaluation of patients with chest pain in the emergency department.⁴ With the constantly increasing number of CCTA-capable scanners worldwide, the volume of CCTA scans performed is likely to show substantial further increase.^5,6