In accordance with the invention, the oxygenation of blood-profused tissue is measured by shining light into the profused tissue and analyzing the light reflected within the tissue. The light is reflected by cell walls in the tissue and is partially absorbed by hemoglobin in the blood. Since the extent...http://www.google.fr/patents/US7356365?utm_source=gb-gplus-shareBrevet US7356365 - Method and apparatus for tissue oximetry