A calibration method for whole-body counters, using Monte Carlo simulation

被引:14
作者
Ishikawa, T
Matsumoto, M
Uchiyama, M
机构
[1] Natl. Inst. of Radiological Sciences, Inage-ku, Chiba, 263
关键词
D O I
10.1093/oxfordjournals.rpd.a031585
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A Monte Carlo simulation code was developed to estimate the counting efficiencies in whole-body counting for various body sizes. The code consists of mathematical models and parameters which are categorised into three groups: a geometrical model for phantoms and detectors, a photon transport model, and a detection system model. Photon histories were simulated with these models. The counting efficiencies for five Cs-137 block phantoms of different sizes were calculated by the code and compared with those measured with a whole-body counter at NIRS (Japan). The phantoms corresponded to a newborn, a 5 month old, a 6 year old, an 11 year old and an adult. The differences between the measured and calculated values were within 6%. For the adult phantom, the difference was 0.5%. The results suggest that the Monte Carlo simulation code can be used to estimate the counting efficiencies for various body sizes.
引用
收藏
页码:283 / 288
页数:6
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