Anisotropic conductivities that cannot be detected by EIT

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Published 30 April 2003 • Published under licence by IOP Publishing Ltd
, , Citation Allan Greenleaf et al 2003 Physiol. Meas. 24 413 DOI 10.1088/0967-3334/24/2/353

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Author affiliations

1 Department of Mathematics, University of Rochester, Rochester, NY 14618, USA

2 Rolf Nevanlinna Institute, University of Helsinki, PO Box 4, FIN-00014, Helsinki, Finland

3 Department of Mathematics, University of Washington, Seattle, WA 98195, USA

Dates

  1. Received 26 November 2002
  2. Published

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0967-3334/24/2/413

Abstract

We construct anisotropic conductivities in dimension 3 that give rise to the same voltage and current measurements at the boundary of a body as a homogeneous isotropic conductivity. These conductivities are non-zero, but degenerate close to a surface inside the body.

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