3D Image Reconstruction in Microwave Tomography Using an Efficient FDTD Model

Author

Fhager, A. ; Padhi, S.K. ; Howard, J.

Author_Institution

Dept. of Signal & Syst., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

1353

Lastpage

1356

Abstract

This letter describes an efficient three-dimensional (3D) image reconstruction algorithm for microwave tomography. Using the thin-wire approximation with resistive voltage sources (RVS), a realistic FDTD model is created for the transmitting and receiving antennas. To verify the algorithm, image reconstruction is made from experimental data using a cylindrical test object made of sunflower oil. In the results, successful image reconstruction has been shown, indicating that the FDTD model is applicable. For comparison, a reconstruction with a two-dimensional (2D) version of the algorithm was made. A significant increase in accuracy of the reconstructed object was seen for the 3D version.

Keywords

finite difference time-domain analysis; image reconstruction; microwave imaging; receiving antennas; tomography; transmitting antennas; 3D image reconstruction; FDTD model; cylindrical test object; microwave tomography; receiving antennas; resistive voltage sources; sunflower oil; thin wire approximation; transmitting antennas; Antenna modeling; finite-difference time-domain (FDTD) methods; microwave imaging; microwave measurements; tomography;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2009.2039032

Filename

5357421