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本文报道用ＬＬＮＬ胸腔模型和ＪＡＥＲＩ躯干模型对由双层晶体探测器构成的超铀元素活体测量系统进行效率刻度的结果及其比较。实验结果表明，用ＪＡＥＲＩ模型得到的肺中２４１Ａｍ的计数效率比ＬＬＮＬ模型的高７％～１０％；而对肺中２３８，２３９Ｐｕ用ＬＬＮＬ模型得到的计数效率比用ＪＡＥＲＩ模型的高７％～２０％。
In this paper, we report the results and comparison of the efficiency calibration of the transuranic elemental in vivo measurement system with the LLNL chest model and the JAERI trunk model. The experimental results show that the counting efficiency of 241Am in the lung obtained with the JAERI model is 7% -10% higher than that of the LLNL model; while the counting efficiency of the 238,239Pu LLNL model in the lung is 7% -20% higher than that of the JAERI model %.