Theoretical and Experimental Study of Pulse Oximetry

Abstract

Pulse oximetry is used world wide in medical practice. Development of theory of pulse oximetry is still necessary for improving its performance. First we hypothesized a completely scattered light field in the object, and adopted Sir Arthur Schuster's scattering theory as the basis of theory of pulse oximetry. Second, a theoretical formula for pulse oximetry was proposed considering the arterial blood and tissue. Third, with a volunteer experiment the theoretical formula was proved and some constants were obtained.