Radiation exposure during paediatric CT in Sudan: CT dose, organ and effective doses.
The purpose of this study was to assess the magnitude of radiation exposure during paediatric CT in Sudanese hospitals. Doses were determined from CT acquisition parameters using CT-Expo 2.1 dosimetry software. Doses were evaluated for three patient ages (0-1, 1-5 and 5-10 y) and two common procedures (head and abdomen). For children aged 0-1 y, volume CT air kerma index (Cvol), air Kerma-length product and effective dose (E) values were 19.1 mGy, 265 mGy.cm and 3.1 mSv, respectively, at head CT and those at abdominal CT were 8.8 mGy, 242 mGy.cm and 7.7 mSv, respectively. Those for children aged 1-5 y were 22.5 mGy, 305 mGy.cm and 1.1 mSv, respectively, at head CT and 12.6 mGy, 317 mGy.cm, and 5.1 mSv, respectively, at abdominal CT. Dose values and variations were comparable with those reported in the literature. Organ equivalent doses vary from 7.5 to 11.6 mSv for testes, from 9.0 to 10.0 mSv for ovaries and from 11.1 to 14.3 mSv for uterus in abdominal CT. The results are useful for dose optimisation and derivation of national diagnostic reference levels.
Department of Radiology and Molecular Imaging, Medical Physics Section, College of Medicine and Health Sciences, Sultan Qaboos University, PO Box 35, 123 Al-Khod, Oman Sudan Atomic Energy Commission, Radiation Safety Institute, PO Box 3001, Khartoum, Sudan isuliman@squ.edu.om i.i.suliman@gmail.com.
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Suliman
Sudan Atomic Energy Commission, Radiation Safety Institute, PO Box 3001, Khartoum, Sudan.
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Khamis
Faculty of Science and Technology, Department of Medical Physics, Al-Neelain University, PO Box 12702, Khartoum, Sudan.
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Ombada
Department of Radiological Sciences, Applied Medical Sciences College, King Saud University, PO Box 10219, Riyadh 11433, Saudi Arabia.
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Alzimami
Department of Radiological Sciences, Applied Medical Sciences College, King Saud University, PO Box 10219, Riyadh 11433, Saudi Arabia.
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Alkhorayef
Radiology and Medical Imaging Department, College of Applied Medical Sciences, Salman Bin Abdulaziz University, PO Box 422, Alkharj 11943, Saudi Arabia.
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Sulieman
D001822:Body Burden; D002648:Child; D002675:Child, Preschool; D005260:Female; D006257:Head / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011829:Radiation Dosage; D000069079:Radiation Exposure / Q000032:analysis*; D011860:Radiography, Abdominal; D011874:Radiometry / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*