Title :
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
fDate :
3/1/1988 12:00:00 AM
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;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
