Journal of Medical Physics and Applied Sciences

Estimation of Radiation Dose to Thyroid Gland for patients Undergoing Brain Computed Tomography Examinations in Khartoum

As an imaging modality, Computed Tomography (CT) generates greater radiation doses compared to other diagnostic equipment. The requests of CT growth rapidly, accordingly radiation dose assessment and patients’ protection are critical. The aim of this study is to assess the radiation dose for patients undergoing brain CT examination in three major hospitals in Khartoum, Sudan. CT Expo software version 2.5 was used to calculate common CT Dose Descriptors: Volume dose index (CTDI_vol), Dose–Length Product (DLP) and thyroid gland effective dose. The results showed that, the mean CTDI_vol, DLP and effective dose for all patients in this study were 74.44 mGy, 1431.36 mGy × cm and 4.30 mSv respectively which is lower than that reported by other institutions. It is important to improve imaging technologists’ understanding of radiation dose in CT protocols and to obtain regular training with respect to optimization of radiation dose and reduction approach.

Author(s): Safea Hafez, Fathi Awad, E Mohamedahmed and Rekha Pachaiappan

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