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Imaging internal structure with electromagnetic induction tomography.

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  • X. Ma
  • A. J. Peyton
  • M. Soleimani
  • W. R. B. Lionheart
Publication date12/03/2007
Host publicationInstrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Pages299 -303
ISBN (print)0-7803-9359-7
<mark>Original language</mark>English


A particularly difficult case in electromagnetic induction tomography (EMT) is to image internal structure at the centre of the object space when the material at the outer regions is conductive. This is because the outer material acts as an electromagnetic screen, which partially excludes the magnetic field from the interior space and hence reduces the sensitivity at the centre. In this paper, we propose a methodology to image the conductivity distribution of an annular object when internal conductive objects are present. Finite element simulations were carried out to investigate how sensor coil outputs change with factors such as the size of internal object with regards to the external one. Linear and non-linear image reconstruction methods are applied to the tomographic data that are collected from a newly developed EMT system and image results are given in the paper .

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