Title :
Antenna optimization for invasive therapy
Author :
Park, Sooman ; Lim, Yeongseog
Author_Institution :
Dept. of Electron. Eng, Chonnam Nat. Univ., Gwangju, South Korea
Abstract :
The paper describes a coaxial antenna system for treating cancer with catheter-based tissue heating. The performance of an antenna for hyperthermia is characterized by specific absorption rate (SAR) and temperature rise in the tissue of interest. First, we analyze the antenna of a conventional applicator and modify its configuration to improve the heating characteristics. We then calculate the return loss and SAR with a liver-equivalent phantom model at 2.45 GHz. The results of SAR computation are used as the heating source of a bio-heat equation. Optimal dimensions and temperature increase are also presented.
Keywords :
UHF antennas; antenna radiation patterns; cancer; hyperthermia; radiation therapy; radiofrequency heating; temperature; tumours; 2.45 GHz; SAR; antenna optimization; cancer; catheter-based tissue heating; coaxial antenna system; heating characteristics; hyperthermia; invasive therapy; liver-equivalent phantom; radiation pattern; return loss; specific absorption rate; temperature rise; Applicators; Cancer; Coaxial components; Equations; Heating; Hyperthermia; Imaging phantoms; Medical treatment; Specific absorption rate; Temperature;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on
Print_ISBN :
0-7803-8639-6
DOI :
10.1109/ISPACS.2004.1439142
