Abstract

Imaging in medicine using light rather than potentially harmful ionizing radiation is a rapidly growing field of interest. The method of measuring the ballistic photons transmitted through homogenous media containing hidden absorbers seems to he a promising technique. However, little attention has been paid to the influence of multi-layered tissues surrounding the tissue of interest, as, for example, the skull encapsulating the brain. In this work we report the possibilities of measuring the thickness of the Layer (e.g., the skull) and the absorption and scattering coefficient (μ_a and μ_s) simultaneously by means of time- and phase-resolved spectroscopy.

© 1993 Optical Society of America