Radiological emergency response may require responders to operate in contaminated environments. To provide more realistic training to these individuals, it has been proposed to disperse low amounts of short-lived radioactive material in simulated emergency scenarios. To demonstrate the applicability and safety of such activities, a limited exercise was conducted where 18F was sprayed in a small area and survey activities were executed. A pre-job external radiation exposure dose assessment was performed in preparation for this training. The research presented here compares participant external recorded doses to assessment results in order to validate the dose estimates. Two individuals were used during the dispersion, search, and survey activities. First, a radiation worker mixed 200 MBq Fludeoxyglucose 18F with 470 mL H2O in a weed sprayer and distributed it over a 3 m × 3 m area. After evaporation, an exercise participant performed search and survey activities in the area. Actual whole-body doses measured with optically stimulated luminescence dosimeters were 10 ± 1 μSv for both personnel. Whole-body digital dosimeters read 4.3 ± 0.2 μSv and 3.3 ± 0.5 μSv for the radiation worker and exercise participant, respectively. Actual extremity doses were below the dosimeters' minimum detectable limits for the radiation worker (thermoluminescence dosimeter) and exercise participant (optically stimulated luminescence dosimeter). The dose assessment-predicted whole-body doses were 2.8 ± 0.4 μSv and 3.2 ± 0.1 μSv for the radiation worker and exercise participant, respectively. The estimated dose to the radiation worker's hand was 21.8 ± 3.8 μSv, and the estimated dose to the exercise participant's knee was 13.4 ± 0.6 μSv. The study provided substantial evidence for the validity of the dose assessment method, supporting its use for a larger training exercise.

中文翻译：

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18F FDG 松散污染演习中使用的剂量评估方法的验证。

放射应急响应可能要求响应者在受污染的环境中进行操作。为了向这些人员提供更真实的培训，有人建议在模拟紧急情况下散布少量的短寿命放射性物质。为了证明此类活动的适用性和安全性，进行了小范围喷洒 18F 并进行调查活动的有限演习。为了为本次培训做准备，进行了岗前外部辐射暴露剂量评估。这里介绍的研究将参与者外部记录的剂量与评估结果进行比较，以验证剂量估计。在分散、搜索和调查活动中使用了两个人。首先，辐射工作人员将 200 MBq Fludeoxyglucose 18F 与 470 mL H2O 在杂草喷雾器中混合，并将其分布在 3 m × 3 m 的区域。蒸发后，演习参与者在该地区进行了搜索和调查活动。使用光激发光剂量计测量的两名人员的实际全身剂量均为 10 ± 1 μSv。辐射工作人员和锻炼参与者的全身数字剂量计读数分别为 4.3 ± 0.2 μSv 和 3.3 ± 0.5 μSv。实际四肢剂量低于放射工作人员（热释光剂量计）和运动参与者（光激发光剂量计）的剂量计最低可检测限值。辐射工作人员和运动参与者的剂量评估预测全身剂量分别为 2.8 ± 0.4 μSv 和 3.2 ± 0.1 μSv。辐射工作人员手部的估计剂量为 21.8 ± 3.8 μSv，锻炼参与者膝盖的估计剂量为 13.4 ± 0.6 μSv。该研究为剂量评估方法的有效性提供了充分的证据，支持其用于更大规模的训练。