碘-125籽源组织间照射患者和周围人员受照剂量的测量和估算

Estimation and Measurement of Exposure Doses to the Circumstance and Patients after Iodine-125 Seeds Permanent Interstitial Implanting.

目的 测量碘 -12 5籽源植入人体模型后患者和周围人员的受照剂量。方法 模拟前列腺癌治疗 ,用FD310 1γ剂量仪测量体表、离体表 30cm和 10 0cm处的外照射剂量率 ,用LiFTLD探测器测量体模内各主要器官的剂量当量。结果 患者体表剂量与各主要器官剂量当量都较低。结论 碘 -12 5籽源组织间放射治疗对患者和周围人员都是一种较安全的肿瘤治疗方法。

Objective To measure the exposure doses to the personel after implanting Iodine-125 seeds into the simulated human-body,phantom.Methods The exposure dose rates were detected by FD3101 gamma-dosimeter at the phantom surface and the locations at 30 cm and 100 cm from the phantom,respectively.Extensive dose equvalent measurements were performed at various organ locations in the phantom,using TLD dosimeters.Results All results were listed in table 1and table 2.Conclusion Exposure doses have been measured and calculated after Iodine-125 seeds implant.They are much lower than those presented in national standards.it is believed that Iodine-125 seeds permanent interstitial implant is promising radiotherapeatic application.