Modeling Human Head at Microwave Frequencies Using Optimized Debye Models and FDTD Method

Author

Ireland, David ; Abbosh, Amin

Author_Institution

Sch. of Inf. Technol. & Electron. Eng., Univ. of Queensland, St. Lucia, QLD, Australia

Volume

61

Issue

4

fYear

2013

fDate

4/1/2013 12:00:00 AM

Firstpage

2352

Lastpage

2355

Abstract

Debye models for tissues found in the human head are presented. The parameters of the Debye models are optimized to measured data of different head tissues. Excellent consistency over the frequency band from 0.1 GHz to 5 GHz is shown with improved accuracy compared to current models using the Cole-Cole approximation. The auxiliary differential-equation based method is used to incorporate the derived models into a finite-difference time-domain program. The validity of the derived models are verified by comparing the fields produced in a realistic 2-D phantom head using a finite-difference time-domain program with the proposed Debye models, and a method of moments solver.

Keywords

biological tissues; brain models; differential equations; finite difference time-domain analysis; microwave imaging; phantoms; Cole-Cole approximation; FDTD method; auxiliary differential-equation based method; current models; finite-difference time-domain program; frequency 0.1 GHz to 5 GHz; head tissues; human head; microwave frequency; moment solver; optimized Debye models; realistic 2D phantom head; Finite difference methods; Head; Mathematical model; Microwave imaging; Moment methods; Phantoms; Time domain analysis; Finite differences; microwave imaging;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2242037

Filename

6417965