The noninvasive measurement system provides a technique for manipulating wave data. In particular, wave data reflected from a biological entity is received, and the reflected wave data is correlated to a substance in the biological entity. The wave data may comprise light waves, and the biological entity...http://www.google.co.uk/patents/US6853854?utm_source=gb-gplus-sharePatent US6853854 - Noninvasive measurement system
