Conclusions and Suggestions on Low-Dose and Low-Dose Rate Radiation Risk Estimation Methodology

Background For radiological protection and control, the International Commission on Radiological Protection (ICRP) provides nominal risk coefficients related to radiation exposure, which can be extrapolated using excess relative absolute obtained from Life Span Study of atomic bomb survivors in Hiroshima Nagasaki with dose dose-rate effectiveness factor (DDREF). Materials Methods Since it is impossible directly estimate at doses less than approximately 100 mSv only epidemiological knowledge data, support biology absolutely imperative, thus, several national international bodies have advocated importance bridging between epidemiology. Because accident Tokyo Electric Power Company (TEPCO)’s Fukushima Daiichi Nuclear Station 2011, exposure public has become a major concern was considered that estimation should more realistic cope prevailing situation. Results Discussion To discuss issues wide aspects protection, realize epidemiology, we established research group develop low-dose low-dose-rate methodology, permission Japan Health Physics Society. Conclusion The aim clarify current situation viewpoints different fields, such as biology, modeling, dosimetry, identify future strategy roadmap elucidate against exposure. Keywords: Radiation Risk Estimation, Low Dose Rate, Epidemiology, Biology, Modeling, Dosimetry