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Published on: March 24, 2022
Applying graphics processor units to Monte Carlo dose calculation in radiation therapy
M Bakhtiari1, H Malhotra, M D Jones
1Department of Radiation Medicine, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
Abstract:
We investigate the potential in using of using a graphics processor unit (GPU) for Monte-Carlo (MC)-based radiation dose calculations. The percent depth dose (PDD) of photons in a medium with known absorption and scattering coefficients is computed using a MC simulation running on both a standard CPU and a GPU. We demonstrate that the GPU's capability for massive parallel processing provides a significant acceleration in the MC calculation, and offers a significant advantage for distributed stochastic simulations on a single computer. Harnessing this potential of GPUs will help in the early adoption of MC for routine planning in a clinical environment.
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