| GAO Yi-ming,LIU Hai-kuan,GU Nai-gu,et al.Monte Carlo simulation methods of determining red bone marrow dose from external radiation[J].Chinese Journal of Radiological Medicine and Protection,2011,31(2):225-228 |
| Monte Carlo simulation methods of determining red bone marrow dose from external radiation |
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| DOI：10.3760/cma.j.issn.0254-5098.2011.02.029 |
| KeyWords:Monte Carlo method Red bone marrow Dose Human phantom simulation |
| FundProject:卫生行业科研专项(200802018) |
| Author Name | Affiliation | | GAO Yi-ming | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | LIU Hai-kuan | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | GU Nai-gu | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | WU Jin-hai | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | HUANG Wei-qin | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | WANG Feng-xian | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | WANG Li | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China | | SU Xu | Institute of Radiation Medicine, Fudan University, Shanghai 200032, China |
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| Abstract:: |
| Objective To provide evidence for a more reasonable method of determining red bone marrow dose by analyzing and comparing existing simulation methods. Methods By utilizing Monte Carlo simulation software MCNPX, the absorbed doses of red bone marrow of Rensselaer Polytechnic Institute (RPI) adult female voxel phantom were calculated through 4 different methods: direct energy deposition, dose response function (DRF), King-Spiers factor method and mass-energy absorption coefficient (MEAC). The radiation sources were defined as infinite plate sources with the energy ranging from 20 keV to 10 MeV, and 23 sources with different energies were simulated in total. The source was placed right next to the front of the RPI model to achieve a homogeneous anteroposterior radiation scenario. The results of different simulated photon energy sources through different methods were compared. Results When the photon energy was lower than 100 keV, the direct energy deposition method gave the highest result while the MEAC and King-Spiers factor methods showed more reasonable results. When the photon energy was higher than 150 keV taking into account of the higher absorption ability of red bone marrow at higher photon energy, the result of the King-Spiers factor method was larger than those of other methods. Conclusions The King-Spiers factor method might be the most reasonable method to estimate the red bone marrow dose from external radiation. |
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