An insulated dipole applicator for intracavitary hyperthermia

Author

Broschat, Shira Lynn ; Chou, Chung-Kwang ; Luk, Kenneth H. ; Guy, Arthur W. ; Ishimaru, Akira

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

Volume

35

Issue

3

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

173

Lastpage

178

Abstract

Specific absorption rate (SAR) patterns for an insulated sleeve dipole applicator, operating at 433 MHz, were measured by infrared thermography. The applicator was modeled using classical transmission-line theory, and experimental and theoretical results were compared. In general, agreement between measured and calculated SAR values was good. However, at the antenna feedpoint, the measured values were appreciably higher than the calculated values. This indicates that inclusion of junction effects would improve the model.

Keywords

biomedical equipment; biothermics; radiation therapy; radiofrequency heating; 433 MHz; antenna feedpoint; classical transmission-line theory; infrared thermography; insulated dipole applicator; intracavitary hyperthermia; junction effects; medical radiation therapy; specific rate absorption patterns; Antenna feeds; Antenna measurements; Applicators; Cancer; Dielectric losses; Dipole antennas; Hyperthermia; Insulation; Region 4; Specific absorption rate; Transmission line measurements; Transmission line theory; Transmission lines; Humans; Hyperthermia, Induced; Models, Theoretical; Thermography;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.1359

Filename

1359