FDTD electromagnetic and thermal analysis of interstitial hyperthermic applicators

Author

Gentili, Guido Biffi ; Leoncini, Marco ; Trembly, B. Stuart ; Schweizer, Steven E.

Author_Institution

Dept. of Electr. Eng., Florence Univ., Italy

Volume

42

Issue

10

fYear

1995

Firstpage

973

Lastpage

980

Abstract

The electromagnetic and thermal behavior of interstitial applicators was analyzed by using the finite-difference time-domain method. Two configurations were considered: a simple insulated dipole antenna radiating in a layered tissue, and an air cooled applicator radiating in a tissue-equivalent phantom. The proposed approach allows a detailed modeling of the complete structure of the applicator. Furthermore, specific absorption rate and temperature distributions can be determined considering real clinical or experimental conditions. The temperature distribution for the air cooled applicator has been compared with experimental results.

Keywords

biomedical equipment; dipole antennas; finite difference time-domain analysis; hyperthermia; microwave antennas; microwave heating; temperature distribution; thermal analysis; air cooled applicator; detailed modeling; electromagnetic analysis; interstitial hyperthermic applicators; layered tissue; medical instrumentation; simple insulated dipole antenna; specific absorption rate; tissue-equivalent phantom; Applicators; Dipole antennas; Electromagnetic analysis; Electromagnetic radiation; Finite difference methods; Hyperthermia; Imaging phantoms; Insulation; Temperature distribution; Time domain analysis; Electromagnetics; Humans; Hyperthermia, Induced; Microwaves; Models, Theoretical; Phantoms, Imaging; Temperature;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.464371

Filename

464371