- Conference date: 16–19 March 2012
- Location: Oaxaca, Mexico
In this work, the well accepted particle splitting technique has been adapted to proton therapy and implemented in a new Monte Carlo simulation tool (TOPAS) for modeling the gantry mounted treatment nozzles at the Northeast Proton Therapy Center (NPTC) at Massachusetts General Hospital (MGH). Gains up to a factor of 14.5 in computational efficiency were reached with respect to a reference simulation in the generation of the phase space data in the cylindrically symmetric region of the nozzle. Comparisons between dose profiles in a water tank for several configurations show agreement between the simulations done with and without particle splitting within the statistical precision.
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