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Monte Carlo simulations of photon absorbed fractions in a frog voxel phantom

カエルボクセルファントムの光子吸収割合評価

木名瀬 栄   

Kinase, Sakae

For radiation protection of the environment, a voxel-based frog phantom was developed using cryosection data, which have been available on a website of the Lawrence Berkeley National Laboratory. The voxel-based frog phantom has a mass of 33.7g. In the present study, the voxel-based frog phantom was applied to evaluating photon AFs in the segmented organs/tissues. The sources were assumed to be monoenergetic in the photon energy range from 10 keV to 4 MeV. The radiation transport was simulated using the Monte Carlo method. Consequently, it was confirmed that the photon AFs for organ self-absorption are dependent on the masses of the source/target organs. It would appear that the photon AFs for organ self-absorption are expressed by a continuous function of photon energy emitted by the source. The photon AFs for organ cross-fire might be subject to the geometry effect such as size and shape of source/target and distance between the source and target.

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パーセンタイル:29.68

分野:Engineering, Electrical & Electronic

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