Calculation of equivalent doses to organs and tissues, as well as lifetime attributable risk from typical computed tomography imaging

Calculation of equivalent doses to organs and tissues, as well as lifetime attributable risk from typical computed tomography imaging is given in the article. Dose-length product (DLP) as a measure of absorbed dose was used for estimating organ doses. Coefficients for conversion of DLP for CT scans of thoracic, abdominal and head organs to equivalent doses were determined. Risks of radiation-induced cancer from computed tomography in relation to age and sex were estimated. Lifetime attributable risk of cancer was estimated with ICRP models (Publication 103) and medico-demographic parameters of the Russian population. The risk estimated using organ doses, which were calculated with the use of DLP, was compared with the risk estimated with organ doses measured using silicone photodiode dosimeters.