Allen B J, Raja C, Hansen R
St. George Cancer Care Centre, Kogarah, NSW.
Australas Phys Eng Sci Med. 1998 Dec;21(4):206-9.
Whole body counting is used to monitor the ingestion of radioactivity by radiation workers when unsealed sources are used in biomedical or industrial applications. The whole body counter at Lucas Heights Research Laboratories has been running for four decades, and radiation workers are frequently monitored for radioactive contamination. In a retrospective study of total body potassium (TBK) values in radiation workers, it was found that the results varied markedly with time. In that TBK is a slowly varying quantity in healthy individuals, variation in TBK is therefore indicative of instability in the counting system. We conclude that TBK can be used as an internal calibration for the whole body counter. The activity of radioisotope contaminants can therefore be expressed relative to the value of the potassium activity in a given subject.
当在生物医学或工业应用中使用非密封源时，全身计数用于监测辐射工作人员对放射性物质的摄入量。卢卡斯高地研究实验室的全身计数器已经运行了40年，并且经常对辐射工作人员进行放射性污染监测。在一项对辐射工作人员全身钾（TBK）值的回顾性研究中，发现结果随时间有显著变化。鉴于在健康个体中TBK是一个缓慢变化的量，因此TBK的变化表明计数系统不稳定。我们得出结论，TBK可作为全身计数器的内部校准。因此，放射性同位素污染物的活度可以相对于给定受试者体内钾活度的值来表示。
