Establishment of diagnostic reference levels in computed tomography in two large hospitals in Oman
Abstract
This study aimed to estimate diagnostic reference levels (DRLs) for the most frequent computed tomography (CT) imaging examinations to monitor and better control radiation doses delivered to patients. Seven CT imaging examinations: Head, Chest, Chest High Resolution (CHR), Abdomen Pelvis (AP), Chest Abdomen Pelvis (CAP), Kidneys Ureters Bladder (KUB) and Cardiac, were considered. CT dosimetric quantities and patient demographics were collected from data storage systems. Local typical values for DRLs were calculated for CTDIvol (mGy), dose length product (DLP) (mGy·cm) and effective doses (mSv) were estimated for each examination. The calculated DRLs were given as (median CTDIvol (mGy):median DLP (mGy·cm)): Head: 39:657; Chest: 13:451; CHR: 6:228; AP: 12:578; CAP: 20:807; KUB: 7:315, and Cardiac: 2:31. Estimated effective doses for Head, Chest, CHR, AP, CAP, KUB and Cardiac were 1.3, 12.7, 6.3, 12.5, 18.1, 5.8 and 0.8 mSv, respectively. The estimated DRLs will act as guidance doses to prevent systematic excess of patient doses.
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The UK adult head CT DRL is 47 mGy CTDIvol and 790 mGy·cm DLP.
“In the United Kingdom, Public Health England (PHE) set national diagnostic reference levels (DRLs) for adult head computed tomography (CT) at 47 mGy for CTDIvol and 790 mGy·cm for DLP, derived from a countrywide study of more than 47,000 CT examinations across 182 scanners.79”
From Computed Tomography Diagnostic Reference Levels Worldwide and in Jordan: Implications for Patient Dose Reduction (2026) · cites this paper as [79]
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Oglat, A., Shdaifat, S., Sayah, M., Abukonna, A., & Khogali, W. (2026) · Drug, Healthcare and Patient Safety · doi:10.2147/dhps.s595721
“79 A national DRL of 56.02 mGy (CTDIvol) and 1260.3 mGy·cm (DLP) for adult head CT was established in Uganda through a multicenter survey done across 13 institutions in partnership with the IAEA.”
Influential
- Authors
- Bouchareb, Y., Al-Maimani, A., Al-Balushi, A.-Y., Al-Kalbani, M., Al-Maskari, H., Al-Dhuhli, H., & Al-Kindi, F.
- Affiliations
- Sultan Qaboos University (OM)
- Sultan Qaboos University Hospital (OM)
- Royal Hospital (OM)
- Royal Hospital Radiology Department, , PO. Box 1331, Muscat , Oman
- Corresponding author
- Bouchareb, Yassine
- Venue
- Radiation Protection Dosimetry
- Publisher
- Oxford University Press (OUP)
- Published
- 2023-08-18
- Volume
- 199
- Issue
- 17
- Pages
- 2148-2155
- ISSN
- 0144-8420 (ISSN-L)
- 1742-3406
- OpenAlex
- W4385969259
- Cited by
- 7
- References
- 26
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 2
- FWCI
- 1.16
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Radiation Protection Dosimetry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiation Dose and Imaging
- Physical Sciences › Physics and Astronomy › Radiation › Advanced Radiotherapy Techniques
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Digital Radiography and Breast Imaging
- Keywords
- diagnostic reference levels, computed tomography, radiation dose, CTDIvol, dose-length product, effective dose, head CT, chest CT, high-resolution chest CT, cardiac CT
- MeSH terms
- Diagnostic Reference Levels, Adult, Aged, Female, Head, Heart, Hospitals, Humans, Male, Middle Aged, Oman, Radiation Dosage, Radiometry, Radiography, Thoracic, Tomography, X-Ray Computed, Young Adult
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