Reconstruction algorithms for electrical impedance tomography

Belward, Catherine (2003). Reconstruction algorithms for electrical impedance tomography PhD Thesis, School of Engineering, The University of Queensland.

       
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Author Belward, Catherine
Thesis Title Reconstruction algorithms for electrical impedance tomography
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2003
Thesis type PhD Thesis
Supervisor Tony Howes
Mike Rezney
Larry Forbes
Kevin Burrage
Total pages 131
Collection year 2003
Language eng
Subjects L
290000 Engineering and Technology
670000 - Manufacturing
Formatted abstract Electrical Impedance Tomography (EIT) is a technique that is used for imaging the interior of a region, in a non-invasive fashion. Electrical current is passed across the object of interest and voltage measurements are taken around the periphery of the object. A mathematical model is then used to estimate the interior structure. EIT has applications in medicine and process tomography.

This thesis studies two reconstruction algorithms for EIT. The first is based on a technique that is in wide use throughout the field and was pioneered by Yorkey. The second algorithm makes assumptions about the underlying geometry of the problem which allows the use of analytic methods. The approach of assuming the geometry of the object being imaged is used to reduce the dimension of the inverse problem in an attempt to make the problem better posed. The second algorithm presented was found to be more stable on test cases, but more limited in the applications for which it could be employed.
Keyword Tomography

 
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Created: Fri, 24 Aug 2007, 18:17:47 EST