COMPARISON OF CANCER RISK ESTIMATES FROM INTERNALIZED UPTAKES OF ENVIRONMENTAL RADIONUCLIDES BASED ON A CHRONIC EXPOSURE
Abstract
The ICRP quantity effective dose, E, is used as an “approximate indicator of possible risk” for uniform exposures.[1] Application of a scaling factor allows E to be directly compared to Federal Guidance Report (FGR) risks. With sex- and age-averaged tissue-weights informing E, potential exists for non-negligible under- or overestimations of risk, especially for a chronic exposure. Comparison of the FGR risk and ICRP calculated committed effective doses (CED) coefficient generated by the Dose and Risk Calculation (DCAL) software reveals a typical underestimation of the risk via CED for acute exposures. For chronic exposure comparisons, a substantial difference was seen. This comparison was repeated for updated ICRP Publication 103 data and revealed a similar issue when estimating risk via CED, indicating a need for increased age-specificity in calculating E to increase approximation accuracy and better inform radiation protection guidance based upon calculations of E for chronic exposures.
Citation
Kalinowski, Autumn Elizabeth (2021). COMPARISON OF CANCER RISK ESTIMATES FROM INTERNALIZED UPTAKES OF ENVIRONMENTAL RADIONUCLIDES BASED ON A CHRONIC EXPOSURE. Master's thesis, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /195165.