An apparatus is provided for determining a calibration coefficient of a blood property sensor located in a blood system, wherein the blood system can include a vascular portion and an extracorporeal portion. The blood property sensor can be located in the extracorporeal portion to measure the change...http://www.google.fr/patents/US7734322?utm_source=gb-gplus-shareBrevet US7734322 - Blood volume determination and sensor calibration
