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从1949年建立第一个能用于测量人体内天然存在的γ放射性的全身计数器以来,在小型化和降低造价方面进行了许多研究,同时发展了具有数据存贮、检索和处理计算机化的新型全身计数器。 全身计数器就可探测的核素而言,除主要用于监测体内γ放射性核素外,也用于监测体内能产生足以被探测到的韧致辐射之β放射性核素,也可通过测量特征X射线和子体γ放射性,分别测量体内的Pu、U和Th等主要放射α的核素,还可通过测定体内活化的核素来推算人体受到的中子剂量。
Since the establishment of the first full-body counter to measure gamma-radioactivity naturally present in humans since 1949, much research has been done on miniaturization and cost reduction while a new type of computerized data storage, retrieval and processing has been developed Whole body counter. In addition to being primarily used to monitor gamma-radionuclides in the body, systemic counters are also used to monitor beta-radionuclides in the body that produce enough Bremsstrahlung that can be detected, as well as by measuring the characteristic X Rays and progeny gamma radioactivity to measure the main radionuclides α, such as Pu, U and Th in vivo, and to estimate the neutron dose received by human body by measuring the activated nuclide in vivo.