Establishing national diagnostic reference levels (DRLs) for computed tomography in Egypt
| Autor: | Dina H. Salama, Debbie Gilley, Mona Shawki, Madan M. Rehani, Jenia Vassileva, Ahmad Salama, Gamal Mahdaly |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
medicine.medical_specialty
medicine.diagnostic_test business.industry Biophysics Chest ct General Physics and Astronomy High resolution Computed tomography General Medicine Radiation Dosage 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Reference Values 030220 oncology & carcinogenesis Angiography Humans Medicine Egypt Radiology Nuclear Medicine and imaging Radiology Tomography X-Ray Computed business Nuclear medicine |
| Zdroj: | Physica Medica. 39:16-24 |
| ISSN: | 1120-1797 |
| DOI: | 10.1016/j.ejmp.2017.05.050 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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