PMID: 3763700Aug 1, 1986Paper

In vivo and in vitro dielectric properties of feline tissues at low radiofrequencies

Physics in Medicine and Biology
A SurowiecA Swarup

Abstract

The dielectric constant and conductivity of muscle, liver, spleen and kidney of cats in vivo and in situ immediately following the animal's death were measured at frequencies from 10 kHz to 100 MHz. A novel multi-ring capacitive sensor and a computer-controlled automatic network analyser (ANA) were employed. The results were compared with the data available from literature for the same species in the frequency range between 10 and 100 MHz. It was found that at frequencies from 10 to 100 kHz the in vitro dielectric constant for all tissues except spleen was smaller than the in vivo one. In contrast, in the range from 1 to 100 MHz the in vitro dielectric constant was larger than the in vivo one. At intermediate frequencies from 0.1 to 1 MHz both the dielectric constant in vivo and in vitro were the same within the experimental uncertainty. The dielectric constant of the spleen in vivo was quite similar to that in vitro. The in vivo conductivity of all tissues appeared to be higher than in vitro from 10 kHz to 10 MHz, while at frequencies above 10 MHz the two conductivities were within the experimental uncertainty.

References

Sep 1, 1985·Physics in Medicine and Biology·S R Smith, K R Foster
Nov 1, 1985·Health Physics·M A Stuchly, D W Lecuyer
Jan 1, 1982·Bioelectromagnetics·A KraszewskiA M Smith
Jan 1, 1957·Advances in Biological and Medical Physics·H P SCHWAN

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Citations

Nov 1, 1992·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·A SurowiecZ Petrovich
Jan 1, 1987·IEEE Transactions on Bio-medical Engineering·A J SurowiecA Swarup
Jun 22, 2016·Experimental Eye Research·Adam M HanifMachelle T Pardue
Jul 29, 2009·Physics in Medicine and Biology·C GabrielE H Grant
Jan 1, 1992·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·H GriffithsR J Williams
Nov 1, 1996·Physics in Medicine and Biology·C GabrielE Corthout
May 1, 1987·Physics in Medicine and Biology·A SurowiecA Swarup
Oct 1, 1989·Physics in Medicine and Biology·H Griffiths, Z Zhang
Feb 3, 2016·Physics in Medicine and Biology·E BalidemajJ Crezee

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