Notes

  • Both breastCompress and FeBiO are multi-threaded applications which respect the environment variable $OMP_NUM_THREADS
  • Currently for the purposes of compression modeling all tissue is treated as either fat, glandular, or muscle
  • Several parameters that users may want to adjust cannot be specified as a command line option and must be changed in the source code file breastCompress.cxx. Some of these parameters include
    • Elasticity parameters
      • fatModulus - Young’s Modulus for fat tissue, default value = 5 kPa
      • fatPoisson - Poisson’s Ratio for fat tissue, default value = 0.49
      • fatDensity - density of fat tissue, default value = 0.000001 kg/mm^3
      • glandModulus - Young’s Modulus for glandular tissue, default value = 15.0 kPa
      • glandPoisson - Poisson’s Ratio for glandular tissue, default value = 0.49
      • glandDensity - density of glandular tissue, default value = 0.000001 kg/mm^3
    • Paddle geometry
      • paddleHeight - thickness of paddle, default value = 1 mm
    • Tetgen parameters - the tetrahedral mesh is generated using the Tetgen library. Mesh parameters are specified in a tetgenbehavior struct. See the TetGet documentatio for more details http://wias-berlin.de/software/tetgen/1.5/doc/manual/index.html
    • FeBiO parameters - all finite element parameters are written to the FeBiO XML input file automatically by the code. To change these parameters consult the FeBiO documentation available at https://febio.org/support/ and the relevant sections of breastCompress.cxx.