We present an open-source platform to aid medical dosimetrists in preventing collisions between gantry head and patient or couch during photon or particle beam therapy treatment planning. This generic framework uses the native scripting interface of the particular planning software to import STL files of the treatment machine elements. These are visualized in 3D together with the contoured or scanned patient surface. A graphical dialog with sliders allows the interactive rotation of the gantry and couch, with real-time feedback. To prevent a future replanning, treatment planners can assess in advance and exclude beam angles resulting in a potential risk of collision. The software platform is publicly available on GitHub and has been validated for RayStation with actual patient plans. Furthermore, the incorporation of the complete patient geometry was tested with a 3D surface scan of a full-body phantom performed with a handheld smartphone. With this study, we aim at minimizing the risk of replanning due to collisions and thus of treatment delays and unscheduled consumption of manpower. The clinical workflow can be streamlined at no cost already at the treatment planning stage. By ensuring a real-time verification of the plan feasibility, the script might boost the use of optimal couch angles that a planner might shy away from otherwise.

中文翻译：

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用于光子和粒子束治疗计划中的交互式碰撞预防的开源平台

我们提出了一个开源平台，以帮助医疗剂量师在光子或粒子束治疗计划期间防止龙门头与患者或沙发之间的碰撞。这个通用框架使用特定规划软件的本地脚本接口来导入治疗机器元件的 STL 文件。这些与轮廓或扫描的患者表面一起以 3D 形式显示。带有滑块的图形对话框允许龙门架和沙发的交互式旋转，并具有实时反馈。为了防止未来重新计划，治疗计划者可以提前评估并排除可能导致碰撞风险的光束角度。该软件平台在 GitHub 上公开可用，并已通过实际患者计划为 RayStation 进行了验证。此外，通过手持智能手机对全身体模进行 3D 表面扫描，测试了完整患者几何结构的结合。通过这项研究，我们的目标是最大限度地减少因碰撞而重新计划的风险，从而减少治疗延误和计划外的人力消耗。在治疗计划阶段，临床工作流程可以免费得到简化。通过确保对计划可行性的实时验证，该脚本可能会促进使用规划人员可能会回避的最佳沙发角度。在治疗计划阶段，临床工作流程可以免费得到简化。通过确保对计划可行性的实时验证，该脚本可能会促进使用规划人员可能会回避的最佳沙发角度。