Title :
Localized heating by the coaxial-dipole antenna for microwave coagulation therapy
Author :
Saito, Kazuyuki ; Hosaka, Sumie ; Hayashi, Yoshihiko ; Yoshimura, Hiroyuki ; Ito, Koichi
Author_Institution :
Graduate Sch. of Sci. & Technol., Chiba Univ., Japan
Abstract :
The heating characteristics of a coaxial-dipole antenna for microwave coagulation therapy have been studied in comparison with those of the coaxial-slot antenna. First, we showed the structure of the antenna. Next, we introduced the FDTD method for calculating the heating characteristics of the coaxial-dipole antenna. Here, the validity of the analytical model was confirmed by comparing the calculated result with the experimental. Moreover, we studied the characteristics of the localized heating only around the tip of the antenna by the FDTD calculations. Finally, we revealed the effectiveness of the coaxial-dipole antenna by the coagulation experiment.
Keywords :
UHF antennas; biomedical equipment; dipole antennas; finite difference time-domain analysis; radiation therapy; radiofrequency heating; 2450 MHz; FDTD method; UHF; coaxial-dipole antenna; heating characteristics; localized heating; microwave coagulation therapy; Analytical models; Antenna feeds; Coagulation; Coaxial components; Electromagnetic heating; Finite difference methods; Imaging phantoms; Medical treatment; Microwave antennas; Time domain analysis;
Conference_Titel :
Antennas, Propagation and EM Theory, 2000. Proceedings. ISAPE 2000. 5th International Symposium on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6377-9
DOI :
10.1109/ISAPE.2000.894810
