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首页> 外文会议>World congress on medical physics and biomedical engineering;International congress of the IUPESM >Calculation of Radiation Dose from a Cloud of Radioactive Iodine Using Voxel Phantoms and Monte Carlo Methods
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Calculation of Radiation Dose from a Cloud of Radioactive Iodine Using Voxel Phantoms and Monte Carlo Methods

机译：使用体素幻影和蒙特卡洛方法计算放射性碘云的辐射剂量

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VMC-dc is a computer program that simulates the irradiation of the human body by external sources. It uses a voxel phantom produced at Yale University and the Monte Carlo technique to simulate the emission of photons by a point, ground, cloud source or X-ray source. It then transports the photons through the human body phantom and calculates the dose to each body region.This paper shows firstly the validation of VMC-dc by comparison with Federal Guidance Report No. 12. The source for the submersion dose calculations is a semi-infinite cloud containing a uniformly-distributed amount of activity of 13II emitter photons of unit strength (1 Bq m~3) surrounding a human phantom standing on the soil at the air-ground interface. The effective dose was calculated using VMC-dc program and compared with the value given in the Federal Guidance Report No.12. Secondly the program VMC-dc was then applied to the calculation of the effective dose and the total dose received by each organ / tissue due to a quantity of 13II released into the environment at 45 GBq (Fleurus nuclear accident).For the validation of VMC-dc code, results show a good agreement for the effective dose due to cloud immersion obtained using VMC-dc and Federal Guidance Report No. 12. The accumulated effective dose received by hypothetical person living in the exposure area for 3 months due to a quantity of I3II released into the environment at 45 GBq is 3.4 nano Sv.
机译：VMC-dc是一种计算机程序，可以模拟外部源对人体的照射。它使用耶鲁大学生产的体素体模和蒙特卡罗技术来模拟点，地面，云源或X射线源发出的光子。然后，它通过人体模型传输光子，并计算到每个人体区域的剂量。 本文首先显示了通过与联邦指导报告第12号进行比较对VMC-dc的验证。淹没剂量计算的来源是半无限的云，该云包含均匀分布的13II单位强度的发射器光子的活动量（1 Bq m〜3）围绕着人体模型，站立在空地界面的土壤上。使用VMC-dc程序计算有效剂量，并将其与《联邦指导报告第12号》中给出的值进行比较。其次，将程序VMC-dc应用于计算有效剂量和每个器官/组织所接收的总剂量，这是由于在45 GBq（荧光核事故）下释放到环境中的13II的量。 对于VMC-dc代码的验证，结果显示使用VMC-dc和联邦指导报告第12号获得的因云浸入而产生的有效剂量的良好一致性。居住在暴露区域3的假设人员所累积的有效剂量为3由于以45 GBq释放到环境中的I3II的数量为3.4纳米Sv。

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