放射性粒子组织间永久插植放射治疗的辐射防护研究  

The Study of the Radiation Protection Problem in the Radionulide Interstitial Implantation Therapy.

作　　者：张继勉[1] 

机构地区：[1]天津医科大学,天津300070

出　　处：《中国辐射卫生》2006年第4期407-408,411,共3页Chinese Journal of Radiological Health

摘　　要：目的分析研究放射性粒子组织间永久插植治疗方法中存在的辐射防护问题。方法依据放射性计量部门的测试数据、推算结果与国家标准对放射性粒子植入手术中操作医师的辐射剂量、全程陪伴患者的家属接受到的辐射剂量、接受不同强度放射性粒子^125Ⅰ治疗的患者出院参考时间等问题加以研究。结果单例放射性粒子植入手术中操作医师的最大辐射剂量为0．315mSv／a，全程陪伴患者的家属接受到的总辐射剂量为0．70mSv，接受放射性粒子^125Ⅰ治疗的患者住院参考时间根据粒子活度不同为0～44d。结论该治疗方法对放射工作人员和周围公众所造成的辐射剂量在一定的防护条件下是可以接受的。但需要重视潜在照射的危险性。对于该方法需要制定严格的手术适应症，杜绝盲目地开展。如必需开展，应保证术前精确计划植入放射性粒子的数量与部位，以避免某些并发症的发生。Objective To analyze and study the radiation protection problem in the radionulide interstitial permanent implantation therapy. Methods Based on test data from radioactive measurement department, calculating results and national standards, the radiation dose of the exposed radioactive particles, the operator who has participated in the radionulide interstitial permanent implantation therapy operation and the relatives who have accompanied the patient during the whole course, the reference time of being discharged from hospital for the patients who have been cured by different activity of radioactive particles are studied. Results The maximal radiation dose of operating doctor who has participated in a single radionulide interstitial permanent implantation therapy operation and the relatives who has accompanied the patient during the whole course are 0.315 mSv/a and 0.70 mSv. Based on actual contact frequenies, their radiation dose is proved to be smaller than the restricted dose prescribed by national standards. The reference time of leaving hospital for the patients who have been cured by different activity of radioactive particles is 0 to 44 days. Conclusion The radiation dose of radiation workers and surrounding publics in the radionulide interstitial permanent implantation therapy operation can be acceptable under certain shields. But the risk of potential exposure should be guarded. We should Lay down operation indications and avoid performing operation blindly. If one must be operated, we should plan the quantity and the part of the painting radioactive particles accurately in order to avoid some plsible complications.

关 键 词：放射性粒子 组织间永久植入 辐射防护 

分 类 号：R142[医药卫生—公共卫生与预防医学]