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X-rays are form of ionization radiation used to create images that help with patients´ diagnosis in diagnostic radiology. Ionisation radiation may potentially damage cells within the body. A dose measurement must be done to avoid unnecessary radiation to patients during X-ray imaging. This textbook explains the importance of diagnostic reference levels (DRL´s) and the development of DRL´s which was achieved by assessing the dose received by patients in radiographic exposures at the Dr George Mukhari hospital. Different X-ray techniques were used to estimate the entrance surface dose using TLD´s placed on the Rando phantom.

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Khombo Dumela did BSc(Physics and Chemistry) [UL. Turfloop],BSc (HONS)in physics and MSc (MED) in medical physics [UL. Mendunsa]. Her MSc was supervised by Ms M.M Jordaan and the co- supervision was Dr A.C Chamberlain. Currently she is a medical physicist intern at Charlotte Maxeke Johannesburg Aacardemic Hospital (CMJAH)

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