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

Volume

43

Issue

6

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

657

Lastpage

660

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;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.495286

Filename

495286