High-speed evaluation of track-structure Monte Carlo electron transport simulations

Alexander Pasciak, J. R. Ford

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

There are many instances where Monte Carlo simulation using the track-structure method for electron transport is necessary for the accurate analytical computation and estimation of dose and other tally data. Because of the large electron interaction cross-sections and highly anisotropic scattering behavior, the track-structure method requires an enormous amount of computation time. For microdosimetry, radiation biology and other applications involving small site and tally sizes, low electron energies or high-Z/low-Z material interfaces where the track-structure method is preferred, a computational device called a field-programmable gate array (FPGA) is capable of executing track-structure Monte Carlo electron-transport simulations as fast as or faster than a standard computer can complete an identical simulation using the condensed history (CH) technique. In this paper, data from FPGA-based track-structure electron-transport computations are presented for five test cases, from simple slab-style geometries to radiation biology applications involving electrons incident on endosteal bone surface cells. For the most complex test case presented, an FPGA is capable of evaluating track-structure electron-transport problems more than 500 times faster than a standard computer can perform the same track-structure simulation and with comparable accuracy.

Original languageEnglish (US)
Pages (from-to)5539-5553
Number of pages15
JournalPhysics in Medicine and Biology
Volume53
Issue number19
DOIs
StatePublished - Oct 7 2008

Fingerprint

Electron Transport
high speed
Radiobiology
Field programmable gate arrays (FPGA)
evaluation
Electrons
field-programmable gate arrays
electrons
simulation
Radiation
biology
Bone
History
Scattering
Bone and Bones
Equipment and Supplies
radiation
Geometry
bones
electron scattering

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Cite this

High-speed evaluation of track-structure Monte Carlo electron transport simulations. / Pasciak, Alexander; Ford, J. R.

In: Physics in Medicine and Biology, Vol. 53, No. 19, 07.10.2008, p. 5539-5553.

Research output: Contribution to journalArticle

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