A method and apparatus for imaging body tissue utilizing autofluorescence. The apparatus includes an endoscope having a distal end, proximal end and a light processing unit located at the proximal end of the endoscope. The light processing unit accepts light in a spectral region from a light source and...http://www.google.de/patents/US5999844?utm_source=gb-gplus-sharePatent US5999844 - Method and apparatus for imaging and sampling diseased tissue using autofluorescence
