Title :
The cap-choke catheter antenna for microwave ablation treatment
Author :
Lin, James C. ; Wang, Yu-Jin
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
fDate :
6/1/1996 12:00:00 AM
Abstract :
A matched-dipole type catheter antenna is described for intracavitary and/or transluminal microwave treatment of diseases that may be responsive to thermal ablation therapy. This cap-choke antenna consists of an annular cap and coaxial choke design that can yield specific absorption rate (SAR) distributions in, and can produce heating of, tissue surrounding the distal end of the catheter antenna. The cap-choke antenna is simple in construction, provides the desired SAR distribution, and is efficient, i.e., the measured power reflection coefficient is 2% in tissue equivalent phantom modeling materials.
Keywords :
biomedical equipment; hyperthermia; inductors; microwave antennas; microwave heating; cap-choke catheter antenna; coaxial choke design; disease treatment; intracavitary microwave treatment; matched-dipole type catheter antenna; medical instrumentation; microwave ablation treatment; power reflection coefficient; specific absorption rate distribution; thermal ablation therapy; tissue equivalent phantom modeling materials; transluminal microwave treatment; Antenna measurements; Catheters; Coaxial components; Diseases; Electromagnetic heating; Inductors; Medical treatment; Microwave antennas; Reflector antennas; Specific absorption rate; Catheter Ablation; Equipment Design; Fiber Optics; Microwaves; Models, Biological; Surface Properties;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
