| Jiang Wenhua,Wang Xiaotao,Li Xueqin,et al.Discussion on maze design of a medical proton therapy system[J].Chinese Journal of Radiological Medicine and Protection,2024,44(11):960-964 |
| Discussion on maze design of a medical proton therapy system |
| Received:September 26, 2023 |
| DOI：10.3760/cma.j.cn112271-20230926-00103 |
| KeyWords:Medical proton accelerator Labyrinth entrance Neutron ambient dose equivalent rate |
| FundProject: |
| Author Name | Affiliation | | Jiang Wenhua | Radiation Source Department, Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 102488, China | | Wang Xiaotao | Radiation Source Department, Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 102488, China | | Li Xueqin | Radiation Source Department, Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 102488, China | | Wang Yinning | Radiation Source Department, Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 102488, China | | Xu Zhongyang | Radiation Source Department, Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 102488, China |
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| Abstract:: |
| Objective To explore the feasibility of the maze design of a proton therapy system. Methods According to the construction scheme of a medical proton therapy system, the ambient neutron dose equivalent rate outside the maze entrance was estimated by numerical analytical formula, and compared with the monitoring result. Results The ambient neutron dose equivalent rate was estimated at between 3.85×10-2 μSv/h and 7.57 μSv/h and measured to be ≤1.56 μSv/h. Conclusions The maze entrance was designed to have 5 sections of tunnel for cyclotron room and 3 sections of tunnel for treatment room, respectively, each with designated length and width. The levels of ambient dose equivalent rate outside the maze entrance is acceptable. |
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