Title :
Application of the Kubelka Munk equation to characterizing a reflectance pulse oximeter
Author :
Davies, C. ; Takatani, S. ; Sakakibara, N. ; Nose, Y.
Author_Institution :
Cleveland Clinic Found., OH, USA
Abstract :
A one-dimensional optical reflectance model based on the equations of P. Kubelka and F. Munk (1931) has been developed to characterize a reflectance pulse oximeter. Arterial blood volume was varied in order to simulate pulsatile changes in reflectance. It was found that the reflectance ratio versus SaO2 (arterial oxygen saturation) varied significantly with SvO2 (venous oxygen saturation). This effect was simulated by changes in the cardiac output. In addition, effects of changing hematocrit and venous blood volume were examined. Neither of these parameters had a significant effect on the reflectance ratio versus SaO2 plot for the oxygen saturation range most often seen clinically (SaO2>80%)
Keywords :
biomedical equipment; biosensors; blood; cardiology; oxygen; reflectivity; Kubelka Munk equation; O2; arterial blood volume; arterial oxygen saturation; cardiac output; hematocrit; one-dimensional optical reflectance model; oxygen saturation range; pulsatile reflectance changes; reflectance pulse oximeter; reflectance ratio; venous blood volume; venous oxygen saturation; Artificial biological organs; Blood; Equations; Fingers; Fluctuations; Nose; Optical pulses; Optical reflection; Optical saturation; Reflectivity;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96103
