Ponente
Descripción
We present a RayStation script to aid medical dosimetrists in preventing collisions between proton gantry head and patient or couch during treatment planning. The script imports 3D models of the treatment machine elements in STL format. These are visualized in the Patient Modeling tab together with the contoured patient surface. A graphical dialog with sliders allows for the interactive adjustment of gantry angle, couch angle and snout retraction. Hence, treatment planners can assess in advance beam orientations with a potential risk of collision. The script is publicly available on GitHub and has been validated for RayStation 8B or higher. The goal of this tool is to minimize the risk of replanning and thus of treatment delays when a collision is found during a dry run. The clinical workflow can be streamlined at the treatment planning stage and at no cost. Furthermore, by providing real-time feedback and assurance of clearance, the script might foster the use of couch angles that are optimum from the dosimetric perspective, but that a planner might shy away from if the plan feasibility is uncertain. The arrival of 10 proton therapy centers to Spain, all of them with RayStation as the underlying planning software and exactly the same machine, offers a unique opportunity to establish a robust, collaborative and shared framework for collision detection and plan feasibility assessment.
References:
- https://github.com/mghro/rad-collision/
- F Hueso-González et al 2020 Biomed. Phys. Eng. Express 6 055013
