Room: Exhibit Hall
Purpose: The significant issue of particle therapy such as proton and carbon ion was an accurate dose delivery from beam line to patient. For designing the complex delivery system, Monte Carlo simulation can be used for the simulation of various physical interactions in beam monitor and filters. In this report, we present the development of Monte Carlo simulation platform to help design the prototype of particle therapy nozzle and performed the Monte Carlo simulation using Geant4. Also we show the prototype design of particle therapy beam nozzle based on the references from HIMAC (Japan) and CNAO (Italy).
Methods: We developed a simulation platform for particle therapy beam nozzle using Geant4. In this platform, the prototype nozzle design of scanning system for carbon was simply designed. For comparison with actual measurement data, the water phantom with 3-dimensional voxel parameterization was also designed as delivered dose verification simulation. For the analysis of simulation data, the percentage depth dose distribution (PDD) and the 3-dimensional dose distribution of Spread Out Bread Peak (SOBP) could be obtained.
Results: For characteristics study of scanning system, various combination of the spot size, ripple filter and scanning magnetic field was tested as simple conditions for our dose delivery system.
Conclusion: In this report, we presented the part of simulation platform and the characteristics study. This study is now on-going in order to develop the simulation platform including the beam nozzle and the dose verification tool with treatment planning system. This study will be finalized after the development of completed dataset acquirement.