Journal
SENSORS
Volume 19, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/s19071707
Keywords
dielectric spectroscopy; temperature dependent dielectric properties of blood; fat; liver; muscle; M-sequence; ultra-wideband; open-ended coaxial probe
Funding
- German Research Foundation (DFG) [HE 6015/2-1]
- Czech Science Foundation [17-20498J]
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The knowledge of frequency and temperature dependent dielectric properties of tissue is essential to develop ultra-wideband diagnostic technologies, such as a non-invasive temperature monitoring system during hyperthermia treatment. To this end, we characterized the dielectric properties of animal liver, muscle, fat and blood in the microwave frequency range from 0.5 GHz to 7 GHz and in the temperature range between 30 degrees C and 50 degrees C. The measured data were modeled to a two-pole Cole-Cole model and a second-order polynomial was introduced to fit the Cole-Cole parameters as a function of temperature. The parametric model provides access to the dielectric properties of tissue at any frequency and temperature in the specified range.
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