paper 150305144536

Published: 2015-07-09

Complex Permittivity Measurement in Hyperthermia Treatment Planning

Ladislav Oppl,

Ladislav Oppl

Czech Technical University in Prague, Czech Republic

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Jaroslav Vorlicek,

Jaroslav Vorlicek

Czech Technical University, Czech Republic

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Jan Vrba

Czech Technical University in Prague, Czech Republic

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Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)2608-2612

Abstract

This paper describes and evaluates a method for determining complex permittiv- ity, and presents results of permittivity measurement of inhomogeneous agar phantom and living tissue. There are described different approaches for measurement of complex permittivity, in particular the non-invasive method of measuring complex permittivity at the end of the coaxial cable. Vector measurement of the reflection coefficient on the interface between probes and mea- sured samples is performed with the aid of network analyzer in the frequency range from 300 kHz to 2 GHz. The results indicate that using the coaxial probe with dimensions of SMA (subminia- ture version A) connector is suitable in the frequency range approximately from 300 MHz to 10 GHz. In order to demonstrate the diagnostic potential of this method, measurements were first conducted on artificially created inhomogeneous agar phantom with added mixture of various dielectrics, followed by measurement of living biological tissue.

Citation

Ladislav Oppl, Jaroslav Vorlicek, and Jan Vrba, "Complex Permittivity Measurement in Hyperthermia Treatment Planning," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)2608-2612

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