Clinical Study A Survey of Organ Equivalent and Effective Doses from Diagnostic Radiology Procedures

License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. e quanti�cation of radiation risks associated with radiological examinations has been a sub�ect of interest with the increased use of X-rays. Effective dose, which is a risk-weighted measure of radiation to organs in the body associated with radiological examination, is considered a good indicator of radiological risk. We have therefore investigated patient effective doses from radiological examinations. Organ and effective doses were estimated for 94 patients who underwent computed tomography examinations and for 338 patients who had conventional radiography examinations. e OrgDose (version 2) program was used for the estimation of effective doses. e tube potential ranges: 57 kVp to 138 kVp depending on the examination and patient size. e entrance surface doses have a wide range even for the same examination: 0.44–10.31mGy (abdomen) and 0.66–16.08mGy (lumbar spine) and the corresponding effective dose ranges 0.025–0.77mSv and 0.025–0.95mSv respectively. Effective dose for adult abdomen-pelvic CT examinations ranges 5.4–19.8mSv with a mean of 13.6mSv and for pediatrics ranges 2.1–5.5mSv with a mean of 2.7mSv. e mean effective dose for adult chest and head CT examinations are 7.9 and 1.8mSv respectively and for pediatrics are 1.7 and 1.1mSv. 1