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Report No.

How many DNA damages are caused in whole body by radiation exposure ?

Hashimoto, Shintaro  ; Watanabe, Ritsuko; Sato, Tatsuhiko   

We have developed a model to estimate probabilities of cell survival by combining a mathematical model of dose distribution, which was obtained by the truck structure simulation, with PHITS. In this study, we performed the modeling of relation between dose distribution at micro-scale and the number of DNA damages, which were given by the analysis of the truck structure simulation. Then, a method to estimate the number of DNA damages at macro-scale was developed using PHITS with the relation. It is expected that an analysis of the radiation influence at the macro-scale with the new model clarifies the relation between DNA damages by radiation and the influence such as cancer causing. Furthermore, we will introduce the distribution of the DNA damages in human body irradiated by heavy ions.



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