A static beam delivery device for fast scanning proton arc-therapy

Abstract Arc-therapy is a dose delivery technique regularly applied in photon radiation therapy, and currently subject of great interest for proton therapy as well. In this technique, beams are aimed at tumor from different continuous ranges incident directions (so called ‘arcs’). This can potentially yield better conformity around the very low surrounding healthy tissue. Currently, proton-arc performed by rotating gantry patient, adapting normally used dose-delivery method to arc-specific motion gantry. Here we present first results feasibility study conceptual design new static fast beam device/system which could be instead novel concept, angle set rapidly only changing field strengths small magnets. device eliminates heavy related hardware. Therefore, reduction total treatment time expected. presented here, concentrate on concept transport. Based several simple, but realistic assumptions approximations, tracking calculations were 3D magnetic map, calculate transport investigate address beam-optics challenges. We propose simulate corresponding solutions discuss their outcomes. To enable implementation some usually techniques such pencil scanning, energy modulation shaping, our proposals. idea perform arc-scanning report study. these results, options next steps design.