Microwave tomography of high dielectric contrast objects. Gradient method in two-dimensional approach

Author

Arefiev, Viktor S. ; Starostin, Andrey N. ; Semenov, Serguei Y. ; Taran, Michael D. ; Svenson, Robert H. ; Sizov, Yuri E. ; Nazarov, Alexei G. ; Tatsis, George P.

Author_Institution

Laser & Appl. Technol. Lab., Carolinas Med. Center, Charlotte, NC, USA

Volume

2

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

857

Abstract

A new reconstruction algorithm in the microwave tomography problem for objects with high contrast in dielectrical properties is proposed. The algorithm is based on approaches developed in an area of control optimization. Generalization and development of these approaches into the non-linear case leads to a refusal of the strong restriction on low contrast in microwave tomography. The algorithm was applied in a two-dimensional (2D) case under parabolic approximation. Successful image reconstruction of 2D mathematical models and physical phantoms placed into a 2D microwave tomographic system with high contrast in dielectric properties were demonstrated

Keywords

dielectric properties; image reconstruction; medical image processing; microwave imaging; 2D mathematical models; control optimization; gradient method; high contrast; high dielectric contrast objects; low contrast; medical diagnostic imaging; microwave tomography; parabolic approximation; physical phantoms; reconstruction algorithm; two-dimensional approach; Biomedical imaging; Boundary conditions; Dielectrics; Equations; Gradient methods; Image reconstruction; Inverse problems; Optimal control; Permittivity; Tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.757795

Filename

757795