Estimation of Radiation Risks to the Brain,Chest, Abdomen and Pelvis during CT Procedures

Abstract

The data of this study were collected form tow hospital, namely: Alamal hospital And (A)Alribatl hospital(B) in Khartoum State, chiring the period2014-2015. Three X-ray machines were used, namely: Neusoft (16 slice), Siemens Somatom (16 slice) Toshiba Aquilion (64 slice).the general objective of the study was to estimate radiation risks to the Brain ,Chest ,Abdomen and pelvis during CT Procedures. A number of (111) patients were examined. Study showed wide variation of the doses received by the different body organs in terms of DLP and CTDIvol. As for the chest examination, the DLP and CTDIvol value were lower than the value of other examination, whereas The Brain examination values were higher. The Brain examination showed the highest mA values and the chest examination showed the last mA values As for the KVP, the study showed that all the selected examination had the same value i.e (120), except the brain examination which had a value of (115). The scan time of the brain examination was longer, where as the Chest examination scan time was shorter. Regarding the abdominal examination, the study showed a direct relationship between the DLP and CTDIvol scan time. This relationship was also a plied to the brain, chest and pelvis examination. The study concluded that the brain examination received the highest radiation dose in terms of DLP and CTDIvol scan time. Special precautions should, there for, be considered during performing such examination.