Assessment of patients radiation doses associated with computed tomography coronary angiography

Salah H 1 , Tamam N 2 , Rabbaa M 3 , Abuljoud M 3 , Zailae A 4 , Alkhorayef 5 Show all authors , Abuhadi N 6 , Elshami W 7 , Sulieman A 8 , Bradley DA 9

Affiliations 

  • 1 INAYA Medical Collage, Nuclear Medicine Department, Riyadh, Saudi Arabia; College of Medical Radiologic Science, Sudan University of Science and Technology, Khartoum, Sudan. Electronic address: hassan.salah.ibrahim1@gmail.com
  • 2 Physics Department, College of Sciences, Princess Nourah Bint Abdulrahman University, P.O Box 84428, Riyadh, 11671, Saudi Arabia
  • 3 Radiology Department, Riyadh Care Hospital, Riyadh, Saudi Arabia
  • 4 Ministry of Health, Saudi Arabia
  • 5 Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, United Kingdom
  • 6 Diagnotic Radiographic Technology Department, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
  • 7 Medical Diagnostic Imaging Department, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
  • 8 Prince Sattam Bin Abdulaziz University, College of Applied Medical Sciences, Radiology and Medical Imaging Department, Alkharj, Saudi Arabia
  • 9 Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, United Kingdom; Sunway University, Institute for Health Care Development, Jalan University, 46150, PJ, Malaysia
Appl Radiat Isot, 2023 Feb;192:110548.
PMID: 36527854 DOI: 10.1016/j.apradiso.2022.110548

Abstract

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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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