Estimation of Radiation Dose to Eye Lens for the Patients Undergoing Scan of Brain by Computed Tomography

Abstract

The aim of this study to estimation the radiation dose for eye lens for patients underwent thescan head by CT model of Toshiba 64 slices in the (RCIH,ANH and ZSH). The data collected from 51patient in three hospitals, Data were used to estimation and comparing the Equivalent dose of eye lens from different diagnostic procedures in three hospitals with the other study from deferent country. was used CT-Exposoftware Version 2.5 for dose calculations, the effective dose between the all hospital in this study, the small value of Effective dose in RCIH (3.92 mSv) then ANH (4.64 mSv) and higher dose in ZSH (5.34 mSv) and higher than the study in Tanzania (2.1 mSv), Australia (3.61 mSv) and UK (1.5 mSv), the Equivalent dose of eye lens is small dose in RCIH (82.97 mSv), then ANH (88.61 mSv) and higher dose in ZSH (97.01 mSv), Themean CTDIVOL values in hospitals is higher than similar study in other country example as (UK (55-65 mGy), Sudan (65.4 mGy) and Tanzania (43 mGy)), except the Australia (86.7 mGy), DLP values was found in this study were higher (1547.5 mGy*cm) than those presentedin Tanzania (913 mGy*cm), Australia (1508.4 mGy*cm) and UK (760-930 mGy*cm).