Comparative Study on the Dielectric Properties Between Living and Non-living from Human and Animal Livers

The data of dielectric properties of human tissues mainly come from an- imal tissues or human corpse at present. Up to now, there has not been a report of di- electric 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 non-living liver. In vitro measurements of living and non-living livers from human and rabbits 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 of 0.06 s/m （living rabbit liver）, 0.13 s/m （living human liver） and 0.24 s/m （non-living human liver）. The Cole parameters that best characterize the liver of human and rabbit are R0, fc, R1, and R∞ The Cole parameters that best characterize the living and nonliving liver of hu- man are R0, fc1, AR1, AR2 and R∞. In conclusion, we can＇t substitute the dielectric prop- erties of animal or human corpse liver for the living human liver. The results suggest that the dielectric properties of living human tissues has great significance on studying.