A NOVEL MODEL OF BLOOD IMPEDANCE FOR INDIRECT VISCOSITY MEASUREMENT

Recent studies have shown the existence of a remarkable strong correlation between electrical impedance and viscosity of blood. Because of possible application for indirect viscosity measurement, impedance-measurement techniques have been investigated. In this paper two measurement techniques to measure blood impedance are discussed. These are the two-electrodes and the four-electrodes technique. The results show the advantages and drawbacks of both these techniques, which appear to depend on the frequency range and the electrodes contact of the electrode-blood interface. Based on experimental results, a novel model for blood impedance has been developed. As compared to existing models, the novel model is valid for a wider frequency range. 1