... via-bility of mastectomy skin flaps. There is currently noaccepted standard for evaluating skin flaps in the intra-operative setting. Techniques which are utilized includethe injection of fluorescein, ... tissues isdependent on the intensity of incident light, separation of the optodes, degree of light scattering in tissues, andamount of absorption by chromophores. Since the inten-sity, distance ... chromo-phores include hemoglobin, myoglobin, and cytochromec oxidase. The volume of tissue under investigation isdetermined by the depth of near infrared light penetration(10 mm). The amount of light...