Experimentally measured scatter fractions and energy spectra as a test of Monte Carlo simulations.
Experimentally measured scatter fractions and energy spectra as a test of Monte Carlo simulations.
复制标题
通过实验测量散射分数和能谱，作为蒙特卡罗模拟的测试。
DOI：
10.1088/0031-9155/32/3/003
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发表时间：
1987
影响因子：
3.5
通讯作者：
Coleman,RE
中科院分区：
文献类型：
--
作者：
Manglos,SH;Floyd,CE;Jaszczak,RJ;Greer,KL;Harris,CC;Coleman,RE
提出了一种验证蒙特卡罗光子输运计算的方法，特别强调这种计算的散射分量。该方法是基于计算和实验散射分数的定量比较。此外，该方法包括点扩散函数和能量谱的定性比较。该方法的应用表明，通过比较现有的Monte Carlo代码的结果与实验结果与伽马相机观看点源的99 Tc m（140千电子伏的伽马射线）内的中心充满水的圆柱体。计算结果与实验结果吻合较好。这些结果使代码可以在各种情况下更有信心地使用，并且它们更精确地定义了代码的适用范围。此外，散射分数和能谱的确定对于其他应用是有用的。例如，散射分数可以是用于评估散射补偿的可能技术的有用参数。
A method for the validation of Monte Carlo photon transport calculations is presented, with particular emphasis on the scatter component of such calculations. The method is based on a quantitative comparison of calculated and experimental scatter fractions. In addition, the method includes a qualitative comparison of point spread functions and energy spectra. An application of the method is demonstrated by comparing the results of an existing Monte Carlo code with experimental results obtained with a gamma camera viewing a point source of 99 Tc m (140 keV gamma rays) centred within a water-filled cylinder. The results of the comparisons show good agreement between experiment and calculation. These results allow the code to be used with increased confidence in a variety of situations, and they define more precisely the region of applicability of the code. In addition, the determination of scatter fractions and energy spectra is useful for other applications. For example, scatter fractions can be a useful parameter for evaluating possible techniques for scatter compensation.