Optical radiation propagation modeling in a phantom of biological tissue by the supercomputer MBC1000/M

The direct problem of biological tissue sounding by a laser source of small aperture is considered. Radiation propagation through tissue is modeled by the transport equation. The grid algorithm is presented to solve it. The technique relies on analytical representation of unscattered light intensity and hemi-analytical method of once-scattered light intensity calculation. Numerical results are presented. They show advantages of considered algorithm of radiative fields calculation in comparison with the statistical modeling method and simplified approach, which leans upon the diffusion equation.