Virtual particle Monte Carlo: A new concept to avoid simulating secondary particles in proton therapy dose calculation.

ABSTRACT:

Background

In proton therapy dose calculation, Monte Carlo (MC) simulations are superior in accuracy but more time consuming, compared to analytical calculations. Graphic processing units (GPUs) are effective in accelerating MC simulations but may suffer thread divergence and racing condition in GPU threads that degrades the computing performance due to the generation of secondary particles during nuclear reactions.

Purpose

A novel concept of virtual particle (VP) MC (VPMC) is proposed to avoid simulating secondary particles in GPU-accelerated proton MC dose calculation and take full advantage of the computing power of GPU.

Methods

Neutrons and gamma rays were ignored as escaping from the human body; doses of electrons, heavy ions, and nuclear fragments were locally d

SUBMITTER: Shan J 

PROVIDER: S-EPMC9588716 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature