Evaluating Effective Dose: A Comparison of Methods Based on Organ Dose Calculations versus Dose-Length Product and Monte Carlo Simulation

Computed tomography (CT) has had a massive impact on diagnostic radiology over the past few decades. Serious concerns exist because of increase in effective radiation dose associated with CT scans, which could pose significant health risks. In CT, can be estimated by Monte Carlo simulations. The aim study was to estimate and compare doses for from organ dose-based calculations using tissue weighting factors International Commission Radiological Protection publications (ICRP 60, 103), CT-Expo v2.6, dose-length product (DLP)-based estimates. For 165 (Ed) most common routine radiological investigations were assessed. There 112 male patients (68%) 53 female (32%). When compared estimates, DLP-based estimates produced applying ICRP 60 coefficients less than 55–57% (head) more 18.1% (chest) 20% (abdomen). 103 values Ed 79% 17% (chest), they changed randomly abdomen. CT-Expo, lower 54% (head), 6% (abdomen), 2% Effective calculated tissue-weighting comparable differ greatly an average 2.3, 2.9, 4.5 mSv head, chest, abdomen, respectively. conclusion, all are subject biases inflicted assumptions methods used; therefore, no agreement should expected. reason evaluating is make point that ICRP’s update indeed accurate. variability use various methodologies scans shown this study.