European astronaut radiation related cancer risk assessment using dosimetric calculations of organ dose equivalents

Application of multi-method-multi-model inference to radiation related solid cancer excess risks models for astronaut risk assessment

“…In extended assessments, quality factors used to calculate organ dose equivalents from the space radiation need to be applied in space radiation risk assessments. However, this is out of the scope of the present study which aims to show the impact of model uncertainty (see however the paper by Walsh et al [13] this issue, which shows the impact of the choice of two different sets of radiation quality factors on the organ dose equivalent estimates). So ideally future space radiation risk assessments will be based on organ dose equivalents and will include MMI in order to provide the most reliable risk estimates possible.…”

“…Because space radiation is composed of different space radiation types and not only of gamma and neutron radiation, the composition of the unit weighted organ dose will be different than for the A-bomb radiation. Since the influence of the RBE of space radiation on the risk estimates for radiation related cancer is still under investigation (e.g., Walsh et al [13] ), the RBE will be major source of uncertainty that needs to be accounted for in future space radiation risk assessments.…”