Kramer G H, Lee T Y, Kim J S
Human Monitoring Laboratory, Radiation Protection Bureau, Ottawa Ontario, Canada.
Health Phys. 1998 May;74(5):613-8. doi: 10.1097/00004032-199805000-00011.
The Health Physics Department of the Korea Atomic Energy Research Institute and the Human Monitoring Laboratory have collaborated to compare the LLNL and JAERI torso phantoms. The counting efficiencies of the phantoms at 17.7 keV, 59.5 keV, 121.8 keV, and 344 keV were measured with KAERI's germanium lung counting system. The data were made comparable by converting the chest wall thicknesses and adipose mass fractions of the phantoms to muscle equivalent chest wall thicknesses. The counting efficiencies of the two phantoms are within 12% to 17% of each other at 17.7 keV, 15% to 22% at 59.5 keV, 10% to 15% at 121.8 keV, and 7% to 10% at 344 keV. This joint study has shown that the LLNL and JAERI phantom are essentially equivalent for the purposes of calibrating a lung counting system that consists of two ACTII germanium detectors.
韩国原子能研究所健康物理部与人体监测实验室合作，对劳伦斯利弗莫尔国家实验室（LLNL）和日本原子能研究所（JAERI）的躯干模型进行了比较。利用韩国原子能研究所的锗肺计数系统，测量了模型在17.7 keV、59.5 keV、121.8 keV和344 keV处的计数效率。通过将模型的胸壁厚度和脂肪质量分数转换为肌肉等效胸壁厚度，使数据具有可比性。两个模型的计数效率在17.7 keV时相差12%至17%，在59.5 keV时相差15%至22%，在121.8 keV时相差10%至15%，在344 keV时相差7%至10%。这项联合研究表明，对于由两个ACTII锗探测器组成的肺计数系统的校准而言，LLNL和JAERI模型基本等效。
