Tin-117 m (117mSn) is used to treat dogs with osteoarthritic joints by radiosynoviorthesis. The decay process for 117mSn is internal conversion wherein IC electrons and auger electrons provide the therapeutic effect. Additionally, the most prominent gamma emission is 158.6 keV. The effective dose rate received by a person interacting at close distances with a treated dog is needed to determine the person's total dose and thus regulatory compliance. Simple measurement of the dose rate at a given distance does not provide an accurate measurement of the effective dose to a person due to the non-uniform nature of the radiation field at close distances. MNCP models of the interactions of five ages of humans at three distances were created to determine the effective dose rates using the methodology from NRC Regulatory Guide 8.40. Ratios of the effective dose rate to the person to the measured dose rate at 1 m from the same source were calculated.

中文翻译：

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犬 Sn-117m 治疗的年龄依赖性辐射剂量率。


Tin-117 m (117mSn) 用于通过放射滑膜疗法治疗患有骨关节炎的狗。 117mSn 的衰变过程是内部转换，其中 IC 电子和俄歇电子提供治疗效果。此外，最突出的伽马发射是 158.6 keV。需要与接受治疗的狗近距离接触的人所接受的有效剂量率来确定该人的总剂量，从而确定法规遵从性。由于近距离辐射场的不均匀性，给定距离处的剂量率的简单测量并不能准确测量人体的有效剂量。创建了五个年龄段的人类在三个距离处相互作用的 MNCP 模型，以便使用 NRC 监管指南 8.40 中的方法确定有效剂量率。计算人体有效剂量率与同一源 1 m 处测量剂量率的比率。