Monte Carlo simulations in complex geometries: Modeling laser light transport in real anatomy of rheumatoid arthritis

摘要

The potential of Monte Carlo simulations is demonstrated for the prediction of scattering light distributions in the near infrared spectral range on a model for complex human anatorny, the finger joint. The transition from the Boltzmann transport equation to the Monte Carlo algorithm is described. The origins of optical properties of tissues (absorption coefficient mu(a), scattering coefficient mu(S), anisotropy factor g) are discussed and illustrated by laboratory measurements. When measuring these parameters, changes were discovered that joint. A realistic model of the rather complex geometry is relate with the rheumatoid arthritis of a small described. The results of first simulations show a clear distinction between the stray light distribution of healthy Joints and arc in good agreement with recent transillumination experiments. [References: 36]