Optical simulation of monolithic scintillator detectors using GATE/GEANT4
Optical simulation of monolithic scintillator detectors using GATE/GEANT4
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DOI：
10.1088/0031-9155/55/6/009
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发表时间：
2010-03-21
影响因子：
3.5
通讯作者：
van Eijk, Carel W. E.
中科院分区：
文献类型：
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作者：
van der Laan, D. J. (Jan);Schaart, Dennis R.;van Eijk, Carel W. E.
目前正在对用于医学成像，特别是用于发射断层摄影的位置敏感闪烁探测器进行大量研究。蒙特卡罗模拟在许多这些研究活动中起着至关重要的作用。由于闪烁过程，闪烁光子通过晶体的传输以及这些光子转换为电子信号均对探测器性能有重大影响;所有这些过程可能需要纳入模型中以获得准确的结果。在这项工作中，GEANT 4模拟工具包的光学和闪烁模型进行了验证，通过比较模拟和测量单片闪烁体探测器的高分辨率正电子发射断层扫描（PET）。此外，我们还在用户友好的GATE仿真平台（3.0版）中提供GEANT 4光学模型。它示出了如何必要的光学输入参数可以确定具有足够的精度。结果表明，GATE/GEANT 4的光学物理模型，使准确的预测的空间和能量分辨率的单片闪烁体PET探测器。
Much research is being conducted on position-sensitive scintillation detectors for medical imaging, particularly for emission tomography. Monte Carlo simulations play an essential role in many of these research activities. As the scintillation process, the transport of scintillation photons through the crystal(s), and the conversion of these photons into electronic signals each have a major influence on the detector performance; all of these processes may need to be incorporated in the model to obtain accurate results. In this work the optical and scintillation models of the GEANT4 simulation toolkit are validated by comparing simulations and measurements on monolithic scintillator detectors for high-resolution positron emission tomography (PET). We have furthermore made the GEANT4 optical models available within the user-friendly GATE simulation platform (as of version 3.0). It is shown how the necessary optical input parameters can be determined with sufficient accuracy. The results show that the optical physics models of GATE/GEANT4 enable accurate prediction of the spatial and energy resolution of monolithic scintillator PET detectors.