Measurement of Radiation Doses in Computed Tomography and Estimated Radiological Risk factor of Cancer - Libya

The aim of this study is to evaluate the radiation doses received by adult patients undergoing six common routine types of CT scans in Libya. These types cover the Head, Neck, Chest, Abdomen, Pelvis and Trunk. This work consists of measurements of (191) patients examinations in (1) government Hospital. The average doses area CTDIvol Volume computed tomography dose index (CTDIvol ) and dose-length product (DLP) were measured for each patient for each examination. The corresponding average effective doses were calculated from the DLP measurement for each scan using NRPP X-Dose software online. The risk rate of developing cancerous tumors as a results of exposure to radiation doses during diagnostic medical applications was also measured using a CT scanner, and the results were compared with these derived from similar surveys published by the United Nations Scientific Committee on the effects of Atomic Radiation (UNSCEAR, 2000,2007). Current measurements will provide a useful starting point and baseline for setting National diagnostic reference levels for the first time. These results can be used in the future to evaluate the populations collective dose of medical exposure and risk of cancer from CT Scan applications.