Tissue Optical Properties in Relation to Light Propagation Models and in Vivo Dosimetry

Optical radiation (ultraviolet, visible, infrared) propagates through tissue absorption and scattering processes take place which depend strongly on the wavelength of the radiation and which may vary considerably between tissues. With the widespread and increasingly varied applications of light in medicine and biology, there is a need for accurate but practicalble methods to determine the spatial (and possibly also the temporal) distribution of light in tissue. There are two approaches to the problem.