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 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.This paper aims to studying the dielectric properties of human living liver and comparing 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 rabbit are shown in the range of 10 Hz to 100 MHz.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(non-living human liver); The Cole parameters that best characterize the liver of human and rabbit are R0,fc1,ΔR1 and R∞; The Cole parameters that best characterize the living and non-living liver of human are R0,fc1,ΔR1,ΔR2 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 the study on the dielectric properties of living human tissues has great significance.

The data of d ieleclric properties of hum an tissues m ably com es from an in al tissues or hum an corpse at present U p to now, there has not been a report of dielectric properties of human living liver. This paper aims to studying the dielectric properties of hum an living liver and corn paring the results with those of an in al living liver as well as the human non-livhg liver. In vitro measurements of living and non-living livers from human and rabbitare shown in the range of 10 Hz to 100 MHz. Analysis of the conductivity, perm ittivity and characteristic param eters 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 hum an liver） and 0.24 S/m （non-living hum an liver）; The Cole param eters that best characterize the liver of hum an and rabbit are RO, fc1,△R I and R ∞ ;The Cole param eters that best characterize the living and non-living liver ofhum an are RO, fc1,△R I,△R2 and R ∞. In conclusion,we can＇t substitute the dielectric properties of anin al or hum an corpse liver for the living human liver. The results suggest that the study on the dielectric properties of living hum an tissues has great sign ificance.