Charged particle interactions with matter have been continuously studied by simulations based on the Monte Carlo method. In particular, the Geant4 toolkit allows to develop and test new technologies by computer simulations. A proton computed tomography (pCT) prototype has been developed at the Loma Linda University Medical Center (LLUMC), California, in collaboration with Northern Illinois University and the UC Santa Cruz. In order to evaluate the performance of the Geant4 version 9.3 configured to simulate this prototype, two polyethylene phantoms (PEAD) with 150 mm diameter and acrylic core were constructed. Each phantom was imaged with 10 projections by rotating the phantom in steps of 36, using a 200 MeV proton cone beam. The characteristics of the prototype and phantoms were modeled in Geant4. A comparison of the experimental data and simulated projections were performed and will be presented.
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机译：通过基于蒙特卡罗方法的模拟连续研究与物质的带电粒子相互作用。特别是，Geant4 Toolkit允许通过计算机模拟开发和测试新技术。 Proton计算机断层扫描（PCT）原型于加利福尼亚州林达大学医疗中心（LLUMC），与伊利诺伊州北部和UC Santa Cruz合作开发。为了评估配置为模拟该原型的GEANT4版本9.3的性能，构建了具有150mm和丙烯酸芯的两个聚乙烯体模（PEACE）。使用200MeV质子锥形梁，通过旋转36的步骤旋转幻像，通过10个突起对每个幽灵进行成像。原型和幽灵的特征在Geant4中进行了模拟。进行实验数据和模拟突起的比较，并将呈现。
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