A method and system for examination of a subject positioned between input and detection ports of the spectroscopic system applied to the subject. The systems shown include at least one light source for introducing at one or multiple input ports, electromagnetic non-ionizing radiation of a known time-varying...http://www.google.com.au/patents/US5353799?utm_source=gb-gplus-sharePatent US5353799 - Examination of subjects using photon migration with high directionality techniques
