System and method for radiation dose calculation within sub-volumes of a monte carlo based particle transport grid

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873384

Bergstrom, Paul M ^[1]; Daly, Thomas P ^[1]; Moses, Edward I ^[1]; Schach von Wittenau, Alexis E ^[1]; Garrett, Dewey N ^[1]; House, Ronald K ^[2]; Hartmann-Siantar, Christine L ^[1]; Cox, Lawrence J ^[3]; Fujino, Donald H ^[4]

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1. Livermore, CA
2. Tracy, CA
3. Los Alamos, NM
4. San Leandro, CA

A system and method is disclosed for radiation dose calculation within sub-volumes of a particle transport grid. In a first step of the method voxel volumes enclosing a first portion of the target mass are received. A second step in the method defines dosel volumes which enclose a second portion of the target mass and overlap the first portion. A third step in the method calculates common volumes between the dosel volumes and the voxel volumes. A fourth step in the method identifies locations in the target mass of energy deposits. And, a fifth step in the method calculates radiation doses received by the target mass within the dosel volumes. A common volume calculation module inputs voxel volumes enclosing a first portion of the target mass, inputs voxel mass densities corresponding to a density of the target mass within each of the voxel volumes, defines dosel volumes which enclose a second portion of the target mass and overlap the first portion, and calculates common volumes between the dosel volumes and the voxel volumes. A dosel mass module, multiplies the common volumes by corresponding voxel mass densities to obtain incremental dosel masses, and adds the incremental dosel masses corresponding to the dosel volumes to obtain dosel masses. A radiation transport module identifies locations in the target mass of energy deposits. And, a dose calculation module, coupled to the common volume calculation module and the radiation transport module, for calculating radiation doses received by the target mass within the dosel volumes.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 6148272
• OSTI ID: 873384
• Country of Publication: United States
• Language: English

Related Subjects

method
radiation
dose
calculation
sub-volumes
monte
carlo
based
particle
transport
grid
disclosed
step
voxel
volumes
enclosing
portion
target
mass
received
defines
dosel
enclose
overlap
third
calculates
common
fourth
identifies
locations
energy
deposits
fifth
doses
volume
module
inputs
densities
corresponding
density
multiplies
obtain
incremental
masses
adds
coupled
calculating
third step
particle transport
radiation dose
monte carlo
radiation transport
dose calculation
method identifies
transport grid
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