A system and method non-invasive biomedical optical imaging and spectroscopy with low-level light is described. The technique consists of a modulated light source (120) coupled to tissue (100) of a patient to introduce excitation light. Fluorescent light emitted in response to the excitation light is...http://www.google.de/patents/US5865754?utm_source=gb-gplus-sharePatent US5865754 - Fluorescence imaging system and method
