Development of double-electrode applicator for localized thermal therapy

Author

Kotsuka, Youji ; Hankui, Eiji ; Hashimoto, Makoto ; Miura, Motohiro

Author_Institution

Fac. of Eng., Tokai Univ., Kanagawa, Japan

Volume

48

Issue

11

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

1906

Lastpage

1908

Abstract

A double-electrode applicator for localized thermal therapy is developed by breaking through the construction principle of the capacitive applicator. To make the beam of the electric field narrow, a ferrodielectric material is introduced as the sub-electrode. The optimum configuration of the double electrode and the material constant in each part of this applicator are investigated theoretically and experimentally. Good localised deep-heating characteristics are obtained at an operating frequency of 13.56 MHz and an output power 450 W by choosing a ferrodieletric material (BaTiO₃) with a relative permittivity of 6000 as the sub-electrode.

Keywords

biomedical electrodes; hyperthermia; permittivity; radiofrequency heating; 13.56 MHz; 450 W; BaTiO₃; benign prostatic hyperthermia; capacitive applicator; capacitive heating; double-electrode applicator; ferrodielectric material; good localised deep-heating characteristics; localized thermal therapy; material constant; medical instrumentation; optimum configuration; relative permittivity; sub-electrode; thermal therapy; Applicators; Copper; Electrodes; Electromagnetic heating; Hyperthermia; Medical treatment; Radio frequency; Skin; Space heating; Structural beams;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.883870

Filename

883870