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Control of specific absorption rate distribution using capacitive electrodes and inductive aperture-type applicators: implications for radiofrequency hyperthermia.

H Kato·J W Hand·M V Prior·M Furukawa·O Yamamoto·T Ishida
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Abstract

A method of controlling the specific absorption rate (SAR) distribution in radiofrequency hyperthermia is proposed. The superposition of the current density associated with capacitively coupled electrodes and that associated with H-field coupled inductive aperture-type applicators modifies the actual current distribution in the heating material. Using a two-dimensional finite element method, we have shown that "focusing" is possible such that the SAR at the center of a phantom can be adjusted to be approximately twice that in superficial regions, even though the wavelength is considerably greater than the dimensions of the phantom.

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Electric ConductivityElectrodesHyperthermia, InducedModels, StructuralModels, TheoreticalRadio WavesJournal ArticleResearch Support, Non-U.S. Gov't

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H Kato, J W Hand, M V Prior, M Furukawa, O Yamamoto, T Ishida. 1991. Control of specific absorption rate distribution using capacitive electrodes and inductive aperture-type applicators: implications for radiofrequency hyperthermia.. https://doi.org/10.1109/10.83563

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