Speaker
Description
We present a RayStation script to aid medical dosimetrists in preventing collisions between gantry head and patient or couch during treatment planning. The script, developed at Massachusetts General Hospital, imports 3D models of the treatment machine elements in STL format. These are visualized in the Patient Modelling tab together with the contoured patient surface. A graphical dialogue with sliders allows the interactive adjustment of gantry angle and couch angle. 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.
References:
- F Hueso-González et al 2020 Biomed. Phys. Eng. Express 6 055013
