论文部分内容阅读
目的:探索导致核医学工作人员甲状腺碘-131（n 131I）内照射的主要危险因素，对工作人员甲状腺n 131I内照射风险进行评估。n 方法:于2019年3至10月，以整群抽样方法收集2018年度福建省开展n 131I核素诊疗的21家核医学单位资料，对n 131I自动分装仪数量、n 131I甲状腺癌（甲癌）和甲状腺功能亢进症（甲亢）及肝癌治疗人数、核医学工作人员数量、执业类别、n 131I操作情况和轮岗情况进行调查，并对其中20家开展n 131I甲癌和甲亢诊断治疗的医院进行场所n 131I气溶胶检测和工作人员甲状腺n 131I直接测量。分析核医学工作人员甲状腺n 131I内照射的主要危险因素，并建立内照射风险评估模型。n 结果:20家医院核医学监督区n 131I气溶胶的检出率为80.0%（16/20），工作人员甲状腺n 131I检出率为25.5%（62/243）。工作人员近10个有效半减期内参与n 131I的分装和给药、核医学科监督区n 131I气溶胶的活度浓度、n 131I甲癌和n 131I甲亢治疗人数是核医学工作人员甲状腺n 131I内照射的主要危险因素（n OR=5.857、6.808、1.983、1.150，n P<0.05）。n 结论:核医学工作人员n 131I内照射暴露普遍存在，应当重视对核医学工作人员内照射的防护，加强主要危险因素的控制。n “,”Objective:To explore the main risk factors and to assess the risk of thyroid n 131I exposure among nuclear medical workers.n Methods:From March to October in 2019, cluster sampling was adopted to collect the number of n 131I automatic packer and patients treated for thyroid cancer, hyperthyroidism and liven cancer used n 131I, the practicing categories, job rotation and n 131I operation condition of nuclear medical staff were also investegated in the 21 nuclear medicine hospitals in Fujian Province that carried out n 131I nuclide diagnosis and treatment in 2018. n 131I aerosol and personnel thyroid n 131I were measured in 20 hospitals using n 131I for thyroid cancer or hyperthyroidism. The main risk factors leading to thyroid n 131I exposure of nuclear medical staff were found and aninternal exposure risk assessment model was established.n Results:The detection rate of n 131I aerosol and personnel thyroid n 131I were 80.0% (16/20) and 25.5% (62/243) in 20 hospitals. The situation of packaging and administration about n 131I in the nearly 10 effective half-life, the concentration of n 131I aerosol in the nuclear medicine workplace, the number of patients treated with n 131I for thyroid cancer or hyperthyroidism were the main risk factors leading to thyroid n 131I internal exposure (n OR=5.857, 6.808, 1.983, 1.150, n P<0.05) .n Conclusion:131I exposure is common among nuclear medical workers, attention should be paid to the protection of internal radiation, strengthen the control of main risk factors, so as to reduce the risk of internal radiation.n