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~(18)F标记的氟脱氧葡萄糖(FDG)配合正电子发射断层(PET),被广泛应用于人体糖代谢研究.其给予人体的吸收剂量亦受到人们的关注.材料和方法:受检者中18名年龄在23～60岁之间的健康自愿者.用标准仪器测量注入活度,其注入活度范围在74～370MBq之间.用ECAT H,PT931和CTI断层分别测量器官活度.为了获得定量结果,对获取数据进行了适当的衰减校正.用动态PET扫描机测量活度随时间的变化.当观察1小时的代谢过程时,需每隔5分钟测量一次活度.假定器官活度均匀分布,器官总活度等于单位质量的平均活度乘以器官质量.膀胱内容物(尿)的时间-活度曲线
~ (18) F-labeled fluorodeoxyglucose (FDG) with positron emission tomography (PET) has been widely used in the study of human glucose metabolism, and its absorbed dose to the human body is also receiving attention.Materials and Methods: Subjects 18 healthy volunteers aged 23 to 60. The injection activity was measured with a standard instrument with an injection activity range of 74-370 MBq.Organic activity was measured with ECAT H, PT931 and CTI slices, respectively. In order to obtain a quantitative result, the acquired data were subjected to an appropriate attenuation correction, and the activity was measured with a dynamic PET scanner over time.When one-hour metabolic process was observed, the activity was measured every 5 minutes. Degree of uniform distribution, the total organ activity is equal to the average activity per unit mass multiplied by the quality of the organ Urinary bladder contents (urine) of the time-activity curve