If anyone is looking to hire in this area I have a friend who wrote his doctoral thesis on this subject. His research was focused on what diagnosis that can be established by shining infrared light on the skin and filming blood vessels up to one centimeter into the skin. I was at his thesis presentation and he literally referred to the Star Trek tricorder.

His thesis is on Amazon: http://www.amazon.com/PHOTON-PROPAGATION-TISSUE-BIOLOGICAL-F...