Title: Contribution to the three-dimensional tomography model
Authors: Dědek, Libor
Citation: AMTEE ’03 : fifth international conference on Advanced Methods in the Theory of Electrical Engineering : September 10-12, 2003 [Klatovy, Czech Republic], p. 23-26.
Issue Date: 2003
Publisher: University of West Bohemia
Document type: článek
konferenční příspěvek
URI: http://amtee.zcu.cz/AMTEE/ArchivedProceedings/proceedings_AMTEE_2003/index.html
Keywords: tomografie;3D model;metoda konečných prvků;plovoucí potenciál elektrody;současně poháněné elektrody;tomography;3D model;finite element method;floating potential electrodes;current driven electrodes
Abstract: Electrical impedance tomography (EIT) is an imaging tool for clinical and proces applications, in which maps of the electric conductivity (or, more generally admittivity) distribution inside a body are formed from the current-to-voltage map of the body´s surface. EIT is usually a three-dimensional problém, as the current lines in practical problems do not remain localized in a plane. The transposition of two-dimensional (2-D) EIT to three-dimensional (3-D) EIT is a challenging task and imposes significant increase in computational power demands and storage requirements. This work demonstrates most advance techniques, which are used in EIT. Described is 3-D image reconstruction algorithm based on the Newton method in which optimal results are obtained for the reconstruction process. More importantly, the algorithm incorporates 3-D forward modeling, based on the finite element method (FEM), in which is proposed accurate modeling of current fed and voltage collectiong electrodes. Two programs as well as experimental vessel with objects of different conductivity are being developed.
Rights: © University of West Bohemia
Appears in Collections:CPEE – AMTEE 2003

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