Abstract

PMCT probe, saying, one kind of open-ended coaxial probe adopted widely in microwave coagulation therapy of cancer, is used to measure the complex permittivity of biological tissues in this work. This work aims to find the variation tendency of the permittivity for biological tissues when the biological tissues are heated by microwave percutaneous coagulator (MPC) with different power for different time. In addition, the admittance model is employed to extract the permittivity of the biological tissues of our interest, and the corresponding permittivity is calculated in the frequency range from 900 MHz to 4 GHz.

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