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KŘÍŽ, T. DĚDKOVÁ, J.
Original Title
A New Algorithm for Electrical Impedance Tomography Inverse Problem
Type
conference paper
Language
English
Original Abstract
This paper proposes new technique for solution of electrical impedance tomography inverse problems. Usually, a set of voltage measurements is acquired from the boundaries of an investigated volume, whilst this is subjected to a sequence of low-frequency current patterns. In principle, measuring both the amplitude and the phase angle of the voltage can result in images of the electric conductivity and permittivity in the interior of a body. Alternating current patterns are preferred to DC to avoid polarization effects. In the usual frequency range (below 1 MHz) the field can be considered a steady current field, which is governed by the Laplace equation. It is well known that while the forward problem is well-posed, the inverse problem is nonlinear and highly ill-posed. The recently described methods are often based on deterministic or stochastic approach to solve mainly 2D problems. The aim of this paper is to present a new way for a successful image reconstruction to obtain high-quality reconstruction in electrical impedance tomography problems. Numerical results of an image reconstruction based on new technique are presented and compared.
Keywords
EIT, Level Set method
Authors
KŘÍŽ, T.; DĚDKOVÁ, J.
RIV year
2009
Released
23. 3. 2009
Publisher
The Electromagnetic Academy
Location
Cambridge
ISBN
978-1-934142-08-0
Book
PIERS Proceedings
1559-9450
Periodical
Progress In Electromagnetics
State
United States of America
Pages from
132
Pages to
136
Pages count
5
BibTex
@inproceedings{BUT31438, author="Tomáš {Kříž} and Jarmila {Dědková}", title="A New Algorithm for Electrical Impedance Tomography Inverse Problem", booktitle="PIERS Proceedings", year="2009", journal="Progress In Electromagnetics", pages="132--136", publisher="The Electromagnetic Academy", address="Cambridge", isbn="978-1-934142-08-0", issn="1559-9450" }