A Modified Perturbation Method for two-dimensional time harmonic impedance tomography

D. G. Drogoudis, G. A. Kyriacou, J. N. Sahalos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A reconstruction algorithm for time harmonic impedance imaging based on the Modified Perturbation Method (MPM) is proposed. Both the object conductivity (σ) and permittivity (ε) are reconstructed. First the forward problem is solved for a complex dielectric constant using a quasistatic approximation valid up to 100MHz in conjunction with first order absorbing boundary conditions. Then a Jacobian matrix representing the sensitivities with respect to conductivity and permittivity is obtained in close form expressions. Finally, this Jacobian matrix is appropriately introduced into the MPM after the necessary modifications, enabling the reconstruction of εr and σ. A number of computer phantom tests prove the validity of the method.

Original languageEnglish
Title of host publicationPIERS 2004 - Progress in Electromagnetics Research Symposium, Extended Papers Proceedings
Pages441-444
Number of pages4
Publication statusPublished - 2004
EventPIERS 2004 - Progress in Electromagnetics Research Symposium - Pisa, Italy
Duration: 28 Mar 200431 Mar 2004

Other

OtherPIERS 2004 - Progress in Electromagnetics Research Symposium
CountryItaly
CityPisa
Period28/03/0431/03/04

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    Drogoudis, D. G., Kyriacou, G. A., & Sahalos, J. N. (2004). A Modified Perturbation Method for two-dimensional time harmonic impedance tomography. In PIERS 2004 - Progress in Electromagnetics Research Symposium, Extended Papers Proceedings (pp. 441-444)