A quick accurate method for measuring the microwave dielectric properties of small tissue samples.
A resonant cavity perturbation technique has been developed which provides a quick, simple and accurate method of measuring the microwave dielectric properties of small, easily prepared samples of tissues, tissue-simulating materials and biological fluids. The method gives dielectric properties averaged over the sample volume. The measurement accuracy with the apparatus used is +/- 2.2% for relative permittivity and +/- 3.5% for the loss factor for most tissue and biological material samples. With appropriate basic microwave equipment the method can be applied over the 1.5-6 GHz range of frequencies of interest for active and radiometric tissue microwave imaging.
Land
D V
DV
Department of Physics and Astronomy, University of Glasgow, UK.
Campbell
A M
AM
D000273:Adipose Tissue; D000818:Animals; D001853:Bone Marrow; D004553:Electric Conductivity; D006801:Humans; D066298:In Vitro Techniques; D008872:Microwaves