A frequency-dependent FDTD method for biological applications

Author

Sullivan, Dennis M.

Author_Institution

Dept. of Radiat. Oncology, Stanford Univ. Sch. of Med., CA, USA

Volume

40

Issue

3

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

532

Lastpage

539

Abstract

A frequency-dependent finite-difference time-domain (FD)²TD method for calculating the response of pulses in plasma or water has recently been described. This method is an advance over the traditional finite-difference time-domain (FDTD) method in that it allows for the frequency dependence of these two media. The modification of the (FD)²TD method to obtain broadband frequency information in 3D biological applications is discussed. The implementation of this method is described, and its accuracy is verified by comparison with analytic solutions using the Bessel function expansion. The use of this method is illustrated by an example of the 3D simulation of a hyperthermia treatment using two applicators over a frequency range of 40 to 200 MHz

Keywords

biological effects of radiation; biothermics; difference equations; radiation therapy; radiofrequency heating; simulation; time-domain analysis; 3D simulation; 40 to 200 MHz; Bessel function expansion; EM waves; biological applications; broadband frequency information; finite-difference time-domain; frequency-dependent FDTD method; hyperthermia treatment; plasma; pulse response; water; Biological system modeling; Cancer; Dosimetry; Electromagnetic scattering; Finite difference methods; Frequency dependence; Hyperthermia; Plasma applications; Radio frequency; Time domain analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.121729

Filename

121729