Estimation of Effective Radiation Dose During Brain Computed Tomography

Abstract

CT is an important diagnostic tool in modern healthcare; however, CT is a high radiation exposure modality compared to conventional X‐ray devices. This study was carried out to estimate radiation dose received by the patients during brain CT scan. The total data in this study was 117 adult patients undergoing brain CT scan by two different CT scanners (Toshiba 64 & 16 slice) in four hospitals in Khartoum state during April to August 2018, were collect scan parameters, CTDI and DLP and evaluate effective dose by using CT expo version 2.5 software. The results of this study revealed that the mean of effective dose in CT Toshiba 64 slice and CT Toshiba 16 slice was (4.6 ± 0.9) mSv, (2.8 ± 0.5) mSv respectively, and the mean of sensitive organ dose (i.e., eye lens) for Toshiba 64 & 16 slice was (82.8 ± 0.6) mSv, (53.2 ± 0.4) mSv respectively. This study concluded that the mean of radiation dose received by CT scanner 64 slice is higher than CT scanner 16 slice, this difference refers to the difference in protocols.