Abdomen and pelvis computed tomography procedure: Effective dose assessment and establishment of a local diagnostic reference level

Almujally, Abdullah and Alenezi, Saad and Aldosary, Khalid Nasser and Otayni, Ahmed and Sulieman, Abdelmoneim and Abdelghani, Amr and Tamam, Nissren and Mohtasib, Rafat and Masawi, Ahmed and Moftah, Belal and Bradley, D.A. * (2023) Abdomen and pelvis computed tomography procedure: Effective dose assessment and establishment of a local diagnostic reference level. Radiation Physics and Chemistry, 203 (Part A). ISSN 0969-806X

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Official URL: https://doi.org/10.1016/j.radphyschem.2022.110628


Exposure to ionizing radiation may induce cancer risk to the patients proportional to the radiation absorbed dose and the organ sensitivity. Therefore protection of radiation exposure is essential to minimize the radiation cancer risk and prevent the deterministic effects. The International Atomic Energy Agency (IAEA) encourages member countries to establish national diagnostic reference levels (DRLs) to reduce unjustified radiation exposure. This study establishes a local DRL for computed tomography (CT) abdomen and pelvis procedures. In total, 1444 CT abdomen procedures were carried out during nine months. CT abdomen procedures were carried out at King Faisal Specialist Hospital and research center using six CT machines from different vendors. The mean and range of patients’ weight (kg) are 50 (42–120). The recommended DRLs values in DLP (mGy.cm) and CTDIvol (mGy)were 900 and 15 per CT abdomen and pelvis procedure, respectively. 3% (41 cases) were higher than the national DRL for CT abdomen and pelvis. The proposed DRL values are slightly higher than the European and the American College of Radiologists (ACR) DRL values in DLP. The purpose of DRL in terms of CTDIvol (mGy) is comparable with the international guidelines. Thus reducing the scan length, is recommended ensuring that patients receive a minimal possible radiation dose while maintaining the image quality.

Item Type: Article
Uncontrolled Keywords: effective dose; CT dosimetry; cancer risks; radiology; ionizing radiation; national diagnostic reference levels; DRLs; computed tomography
Subjects: R Medicine > RA Public aspects of medicine
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 [merged with Centre for Carbon Dioxide Capture and Utilization wef December 2023]
Depositing User: Ms Yong Yee Chan
Related URLs:
Date Deposited: 08 Jun 2023 12:57
Last Modified: 08 Jun 2023 14:11
URI: http://eprints.sunway.edu.my/id/eprint/2230

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