Comparative Study on the Dielectric Properties between Living and Nonliving from Human and Animal Livers

Abstract

The data of dielectric properties of human tissues mainly comes from animal tissues or human corpse at present. Up to now there has not been a report of dielectric properties of human living liver. Our objective is to study the dielectric properties of human living liver and compare the results with those of animal living liver as well as the human nonliving liver. In vitro measurements of living and nonliving livers from human and rabbit are shown in the 10 Hz to 100 MHz range. Analysis of the conductivity, permittivity and characteristic parameters from the data were made. The conductivity of three kinds of liver were markedly different at low frequency: 0.06 S/m (living rabbit liver), 0.13 S/m (living human liver) and 0.24 S/m (nonliving human liver); The Cole parameters that best characterize the liver of human and rabbit are R0, fel, Δ R1 and R∞; The Cole parameters that best characterize the living and nonliving liver of human are R0, fel, Δ R1, Δ R2 and R∞. In conclusion, we can’t substitute the dielectric properties of animal or human corpse liver for the living human liver. The results suggest that studying the dielectric properties of living human tissues has great significance.KeywordsLiving tissuedielectric propertieslivercharacteristic parametersCole-Cole models