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[摘要]
目的：通过监测回旋加速器周围环境辐射剂量水平,评价其对环境、公众及相关工作人员的辐射安全性。方法：根据污染因子分析,用专用的辐射剂量监测仪器对回旋加速器开机状态下,机房外围环境进行γ、中子辐射剂量率监测。结果：在开机状态下回旋加速器机房门外周围环境γ辐射剂量率为(27~53) ×10-8Gy/h,中子辐射剂量为(0.009~0.019)uSv/h。结论：回旋加速器在开机状态下,不会对周围环境产生辐射影响,工作人员受到的年辐射剂量也远小于国家规定的个人年辐射剂量限制。
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[Abstract]
Objective: To evaluate the safety of PET and cyclotron to the environment, the public and relevant workers by detecting the radiation dose level in the environment .Methods: According to the pollution factor analysis, gamma and neutron dose rate monitoring were carried out in the peripheral environment of the cyclotron and PET/CT machine room with special radiation dose monitoring instrument.Results: The dose rate outside the room door of the cyclotron was (27~53) ×10-8
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