Assessment of Imaging Protocol and Patients Radiation Exposure in Computed Tomography Colonography

In the screening and identifying of colon rectum malignancy, computed tomography colonography (CTC) is a highly effective imaging technique, albeit patients receiving significant dose. Accordingly, patient dose evaluation an important need, seeking to ensure benefits outweigh projected cancer risk. Objective: For CTC procedures carried out in Radiology Department, Medical Imaging Operation Services, King Fahad City (KFMC), done using current American College (ACR) protocol concomitant patient-effective doses. Study on sample size 55 procedures, involving 25 males (45%) 30 females (55%). The were classified as follows: two groups based CT machine; four applied protocol; three procedure results. All machines, products different vendors (a GE Healthcare DISCOVERY 750 HD 64 slices dual-energy scanner Philips Brilliance scanner). overall mean, standard deviation (SD), median, range (in mSv) 11.57 ± 7.75, 9.25 (2.17–31.93). Automatic tube modulation (ATCM) shows increase CTDIvol up 69% (mSv) 95% than manual (mA) compared protocol. variation results three-fold technologist role crucial selecting noise reference weight adjusting per slice avoid overexposure during ATCM