Extracting broadband tissue optics parameters from one source-detector CW diffuse optical spectroscopy

Human tissue by its nature is a kind of complex entity in structures and compositions, with their respective spectral properties. These properties make complex light-tissue interactions as the light propagates inside the tissue. Hence the information on broadband wavelength-dependency of optical parameters is important to asses the state of investigated tissue. Accurately determined tissue optics parameters (i.e. the absorption and scattering coefficients) are crucial for further derivation of many other ones related to hemodynamics states. Nowadays the Diffuse Optical Spectroscopy, which is based on spectral measurements of diffusely re-emanated of injected light source, plays an important role in many tissue diagnostics applications. Most of available extraction schemes are based on multiprobe/multidistance spectral measurements. This paper describes a novel and simple extraction scheme from only single distance of source-detector probe. The use of single pair source-detector probe will significantly reduce the complexity and cost of measurement system.