%0 Dataset
%T Monte Carlo simulation of whole body dose distribution in patients with total body X(γ)ray irradiation
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/bfc991bd-0f24-452c-98ab-4522970590a0
%W NCDC
%R 10.12072/ncdc.imp.db4141.2023
%A Xiao Guoqing
%K Total body irradiation;Monte Carlo simulation;dose uniformity;thermoluminescence dosimeter
%X MCNPX was used to build an accurate Monka model of the 6MV treatment head of MEDA synergy accelerator. According to the relationship between CT value and material density, the CT of the atom physical phantom was converted into a voxel model for MCNPX calculation, and the X-ray image of the patient was simulated（ γ） The simulation results were compared with the measured values of TLD at different positions in the atom phantom, and the differences were analyzed. The results show that the difference between the percentage depth dose curve and the off-axis dose curve calculated by the 6MV accelerator head model in the water phantom under the standard source skin distance and the actual measured value in the hospital is less than 2%, and the difference is less than 10 cm × The depth of the maximum dose point is about 15cm under the field of 10cm, which is consistent with the actual measured value. The maximum difference between the simulated results of dose at different positions in the phantom and the measured values of TLD is about 6%. The simulated results of MCNPX are basically consistent with the measured results of TLD. MCNPX can accurately simulate and calculate the dose distribution of whole body irradiation. Monte Carlo simulation provides the possibility to optimize the whole body dose uniformity of patients in the whole body irradiation process.