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A static beam delivery device for fast scanning proton arc-therapy.
K P Nesteruk1, A Bolsi1, A J Lomax1,2
1Paul Scherrer Institute, Villigen PSI, Switzerland.
Physics in Medicine and Biology
|January 26, 2021
Summary
A new static device for proton arc therapy could replace gantries, enabling faster treatments. This system uses magnets to rapidly change proton beam angles, potentially improving dose delivery and reducing treatment time.
Area of Science:
- Medical Physics
- Radiation Oncology
- Particle Accelerator Technology
Background:
- Arc therapy is a radiation technique used in photon therapy, with growing interest for proton therapy.
- Current proton arc therapy relies on gantry rotation, which is complex and time-consuming.
- Improved dose conformity and reduced healthy tissue irradiation are key benefits of arc therapy.
Purpose of the Study:
- To present the conceptual design of a novel static fast beam delivery system for proton arc therapy.
- To investigate the feasibility of a gantry-less system for proton arc therapy.
- To explore solutions for beam-optics challenges in a static proton arc delivery system.
Main Methods:
- Proton tracking calculations in a 3D magnetic field map were performed.
- A feasibility study focused on the beam transport concept of the new device.
- Simulations were used to test proposed solutions for beam-optics challenges.
Main Results:
- The study presents a novel concept for fast proton arc-scanning using a static device.
- Beam transport calculations and analysis of beam-optics challenges were conducted.
- Proposed solutions for implementing techniques like pencil beam scanning were simulated.
Conclusions:
- A static fast beam delivery system for proton arc therapy is feasible.
- This novel concept offers a potential reduction in total treatment time compared to gantry systems.
- Further design options and next steps are proposed based on initial feasibility results.
