Conclusions
The Monte Carlo model allows calculation of reflection, transmission, and
fluence rates in tissue. Both mismatched boundary conditions and anisotropic
scattering have been included, thereby increasing the realism of the model. A
variable-stepsize weighted Monte Carlo model has been implemented and
validated by comparison with published tables. This Monte Carlo model may be
used to calculate fluence rates for finite beams by convolving the impulse
response with either flat or Gaussian beam irradiation profiles. Analytic
expressions that facilitate such calculations have been presented.
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