According to one embodiment of the present invention, a method for detecting lymph nodes in a human includes introducing a fluorescent contrast agent into a lymph node system of a body, directing near-infrared time-varying excitation light into the tissue of the body, causing the near-infrared time-varying...http://www.google.de/patents/US7865230?utm_source=gb-gplus-sharePatent US7865230 - Method and system for detecting sentinel lymph nodes
