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Cited by 98Radiation Dose and ImagingAdvanced Radiotherapy TechniquesRadiology practices and education

Establishing national diagnostic reference levels (DRLs) for computed tomography in Egypt

Salama, Dina Husseiny, Vassileva, Jenia, Mahdaly, Gamal, Shawki, Mona, Salama, Ahmad, Gilley, Debbie, Rehani, Madan Mohan·2017·Physica Medica
DOI 10.1016/j.ejmp.2017.05.050
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Abstract

Objectives To establish national diagnostic reference levels (DRLs) in Egypt for computed tomography (CT) examinations of adults and identify the potential for optimization.Methods Data from 3762 individual patient's undergoing CT scans of head, chest (high resolution), abdomen, abdomen-pelvis, chest-abdomen-pelvis and CT angiography (aorta and both lower limbs) examinations in 50 CT facilities were collected. This represents 20% of facilities in the country and all of the 27 Governorates. Results were compared with DRLs of UK, USA, Canada, Japan, Australia and France.Results The Egyptian DRLs for CTDI vol in mGy are for head: 30, chest (high resolution): 22, abdomen (liver metastasis): 31, abdomen-pelvis: 31, chest-abdomen-pelvis: 33 and CT angiography (aorta and lower limbs): 37. The corresponding DRLs for DLP in mGy.cm are 1360, 420, 1425, 1325, 1320 and 1320. For head CT, the Egyptian DRL for CTDI vol is 2-3 times lower than the DRLs from other countries. However, the DRL in terms of DLP is in the same range or higher as compared to others. The Egyptian DRL for chest CT (high resolution) is similar to others for DLP but higher for CTDI vol. For abdomen and abdomen-pelvis DRLs for CTDI vol are higher than others. For DLP, the DRLs for abdomen are higher than DRL in UK and lower than those in Japan, while for abdomen-pelvis they are higher than other countries.Conclusion Despite lower DRLs for CTDI vol, an important consistent problem appears to be higher scan range as DRLs for DLP are higher.

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  • Egypt's key findings revealed a consistent problem of higher CT scan ranges of the DRLs for DLP despite the lower DRLs for volume-weighted CTDI.

    “Egypt is one of the few African countries to have developed the National DRL. Their key findings revealed a consistent problem of higher CT scan ranges of the DRLs for DLP despite the lower DRLs for volume-weighted CTDI [15].”

    From Adult Computed Tomography examinations in Uganda: Towards determining the National Diagnostic Reference Levels (2022) · cites this paper as [15]

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Authors
Salama, D. H., Vassileva, J., Mahdaly, G., Shawki, M., Salama, A., Gilley, D., & Rehani, M. M.
Affiliations
  • Egyptian Atomic Energy Authority (EG)
  • International Atomic Energy Agency (AT)
  • Alexandria University (EG)
  • Ain Shams University (EG)
  • Harvard University (US)
Corresponding author
Salama, Dina Husseiny
ORCID
Venue
Physica Medica
Publisher
Elsevier BV
Published
2017-07
Volume
39
Pages
16-24
ISSN
1120-1797 (ISSN-L)
DOI
10.1016/j.ejmp.2017.05.050
OpenAlex
W2670497016
Cited by
98
References
18
Citations by year
2026: 7 · 2025: 17 · 2024: 16 · 2023: 9 · 2022: 14 · 2021: 14 · 2020: 15 · 2019: 4 · 2018: 2
FWCI
4.40
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Physica Medica (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministeriet Sundhed Forebyggelse
  • Egyptian Society of Radiology and Nuclear Medicine
  • International Atomic Energy Agency
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 › Radiology, Nuclear Medicine and Imaging › Radiology practices and education
Keywords
diagnostic reference levels, computed tomography, radiation dose optimization, CTDIvol, DLP, head CT, chest CT, abdominal CT, CT angiography, Egypt, scan range
MeSH terms
Egypt, Humans, Radiation Dosage, Reference Values, Tomography, X-Ray Computed

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