The basic study of radiation protection in the FDG/PET -The radiation dose of patients, family, and medical stuff in the PET clinic-

评价了在用FDG进行PET检查时对医护人员和病人家属（包括照顾病人的志愿者）进行辐射防护的实用方法。在基础研究中，使用与体重70kg的成人几乎相同的机器人幻影测量注射正电子放射性药物的放射性患者的外照射剂量。一项FDG/PET研究对平均剂量为200MBq的患者的平均辐射剂量为0.294 ~ 0.769μSv。在FDG/PET临床研究中，医疗人员的辐射防护主要是如何在短时间内对放射性药物和放射性病人进行治疗，如何与包括发热病人在内的正电子源保持距离，以及如何使用铅和/或钨为正电子发射器设计的屏蔽。掌握适当的冷试验技术，对减少内外照射剂量也有重要意义。在放射防护指导老师的指导下，组织各PET诊所的放射安全教育体系，做好放射安全控制工作。

Practical methods for the radiation protection of medical co-workers and also patient's family including volunteer who take care the patient in the PET examination with FDG were evaluated.In the basic study, the external radiation dose from the radioactive patients who were injected positron radiopharmaceuticals was measured by using the robot phantom almost the same as 70kg body weight adult. The radiation dose to the medical co-workers became average radiation dose of 0.294 to 0.769μSv for one FDG/PET study in patients with mean dose of 200MBq.The main factors of radiation protection for the medical stuff in the clinical study of FDG/PET is thought to be how to treat the radiopharmaceuticals and radioactive patients in the short time, how to keep the distance from the positron source including the hot patients and also how to use the shields designed for positron emitter with lead and/or tungsten. The cold run study to master the adequate technique is also important to minimize the internal and external radiation dose. The educational system of radiation safety should be organize and keep the safety control in each PET clinic under the adviser of radiation protection.