Revista Matemática Iberoamericana


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Volume 30, Issue 2, 2014, pp. 551–580
DOI: 10.4171/RMI/793

Published online: 2014-07-08

Size estimates for the EIT problem with one measurement: the complex case

Elena Beretta[1], Elisa Francini[2] and Sergio Vessella[3]

(1) Politecnico di Milano, Italy
(2) Università degli Studi di Firenze, Italy
(3) Università degli Studi di Firenze, Italy

In this paper we estimate the size of a measurable inclusion in terms of power measurements for a single applied boundary current. This problem arises in medical imaging for the screening of organs (see [17]). For this kind of problem one has to deal mathematically with the complex conductivity (admittivity) equation. In this case we are able to establish, for certain classes of admittivities, lower and upper bounds of the measure of the inclusion in terms of the power measurements. A novelty of our result is that we are also able to estimate the volume of an inclusion having part of its boundary in common with the reference body. Our analysis is based on the derivation of energy bounds and fine quantitative estimates of unique continuation for solutions to elliptic equations.

Keywords: Inverse boundary problems, size estimates, unique continuation

Beretta Elena, Francini Elisa, Vessella Sergio: Size estimates for the EIT problem with one measurement: the complex case. Rev. Mat. Iberoamericana 30 (2014), 551-580. doi: 10.4171/RMI/793