Microwave hyperthermia using retro-focusing

Author

Sawyer, M.D. ; Edrich, J.

Author_Institution

Martin Marietta Astronaut. Group, Denver, CO, USA

fYear

1990

fDate

7-11 May 1990

Firstpage

1224

Abstract

An improved method of focusing microwave energy onto tumorous tissue has been developed. The technique uses the incoherent thermal emissions of tumors to derive the necessary phase information for focusing a phased-array applicator onto a tumor. A two-dimensional finite-difference time-domain program for TM polarizations was developed. The resulting contour images show that retrofocusing is achieved with a size and location accuracy of significantly less than one wavelength.<>

Keywords

antenna phased arrays; biothermics; difference equations; microwave antenna arrays; radiation therapy; self-focusing; time-domain analysis; TM polarizations; cancer treatment; contour images; focusing microwave energy; incoherent thermal emissions; microwave hyperthermia; phase information; phased-array applicator; retrofocusing; tumor treatment; tumorous tissue; two-dimensional finite-difference time-domain program; Applicators; Delay effects; Finite difference methods; Focusing; Hyperthermia; Neoplasms; Phased arrays; Polarization; Signal processing algorithms; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115332

Filename

115332