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

Patent ·
OSTI ID:873384
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [4]
  1. Livermore, CA
  2. Tracy, CA
  3. Los Alamos, NM
  4. San Leandro, CA
+ Show Author Affiliations

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
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

References (3)

A new method for photon transport in Monte Carlo simulation journal January 1999
Surgical-planning support system for stereotactic endoscopy conference June 1993
High resolution anthropomorphic phantom for Monte Carlo analysis of internal radiation sources conference January 1990

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