Diffuse reflectance spectra of blood vessels within a skin tissue model

This paper experimentally studies the diffuse reflectance spectra of blood in cylindrical glass vessels embedded in the Intralipid solution as a skin tissue phantom. The measured spectra were mainly governed by the absorption characteristics of a small amount of blood added into the medium, but were also slightly influenced by the vessel diameter, depth from the surface, and oxygen saturation state. To extract useful information on these conditions from the spectra, we propose use of the color perception on the basis of the pseudo- reference white, and verify its usefulness. The result can also be used to explain the bluish color of veins in the skin tissue.