Assessment of patients radiation doses associated with computed tomography coronary angiography

Salah, H. and Tamam, Nissren and Rabbaa, Mohammad and Abuljoud, Mohammad and Zailae, Ali and Alkhorayef, M. and Abuhadi, N. and Elshami, W. and Sulieman, A. and Bradley, D.A. * (2023) Assessment of patients radiation doses associated with computed tomography coronary angiography. Applied Radiation and Isotopes, 192. ISSN 0969-8043

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Computed tomography coronary angiography (CTCA) has generated tremendous interest over the past 20 years by using multidetector computed tomography (MDCT) because of its high diagnostic accuracy and efficacy in assessing patients with coronary artery disease. This technique is related to high radiation doses, which has raised serious concerns in the literature. Effective dose (E, mSv) may be a single parameter meant to reflect the relative risk from radiation exposure. Therefore, it is necessary to calculate this quantity to point to relative radiation risk. The objectives of this study are to evaluate patients’ exposure during diagnostic CCTA procedures and to estimate the risks. Seven hundred ninety patients were estimated during three successive years. The patient’s exposure was estimated based on a CT device’s delivered radiation dose (Siemens Somatom Sensation 64 (64-MDCT)). The participating physicians obtained the parameters relevant to the radiation dose from the scan protocol generated by the CT system after each CCTA study. The parameters included the volume CT dose index (CTDIvol, mGy) and dose length product (DLP, mGy × cm). The mean and range of CTDIvol (mGy) and DLP (mGy × cm) for three respective year was (2018):10.8 (1.14–77.7) and 2369.8 ± 1231.4 (290.4–6188.9), (2019): 13.82 (1.13–348.5), and 2180.5 (501.8–9534.5) and (2020) 10.9 (0.7–52.9) and 1877.3 (149.4–5011.1), respectively. Patients’ effective doses were higher compared to previous studies. Therefore, the CT acquisition parameter optimization is vital to reduce the dose to its minimal value.

Item Type: Article
Uncontrolled Keywords: CT angiography; radiation risk; effective dose; multidetector computed tomography; MDCT; computed tomography coronary angiography; CTCA
Subjects: Q Science > QC Physics
R Medicine > RC Internal medicine
Divisions: Others > Non Sunway Academics
Sunway University > School of Engineering and Technology [formerly School of Science and Technology until 2020] > Research Centre for Applied Physics and Radiation Technologies
Depositing User: Ms Yong Yee Chan
Related URLs:
Date Deposited: 08 Jun 2023 12:45
Last Modified: 08 Jun 2023 14:13

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