Electron transport in radiotherapy using local-to-global Monte Carlo
- Lawrence Livermore National Lab., CA (United States)
- Albany Medical Center, Albany, NY (United States). Dept. of Radiation Oncology
- Bern Univ. (Switzerland). Dept. of Medical Radiation Physics
- Univ. of Wisconsin-Madison, Madison, WI (United States)
Local-to-Global (L-G) Monte Carlo methods are a way to make three-dimensional electron transport both fast and accurate relative to other Monte Carlo methods. This is achieved by breaking the simulation into two stages: a local calculation done over small geometries having the size and shape of the ``steps`` to be taken through the mesh; and a global calculation which relies on a stepping code that samples the stored results of the local calculation. The increase in speed results from taking fewer steps in the global calculation than required by ordinary Monte Carlo codes and by speeding up the calculation per step. The potential for accuracy comes from the ability to use long runs of detailed codes to compile probability distribution functions (PDFs) in the local calculation. Specific examples of successful Local-to-Global algorithms are given.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Insts. of Health, Bethesda, MD (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 39026
- Report Number(s):
- UCRL-JC-118754; CONF-950420-22; ON: DE95009563; CNN: NIH Grant CA52692; TRN: 95:009766
- Resource Relation:
- Conference: International conference on mathematics and computations, reactor physics, and environmental analyses, Portland, OR (United States), 30 Apr - 4 May 1995; Other Information: PBD: Sep 1994
- Country of Publication:
- United States
- Language:
- English
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