title: Statistical estimation of EIT electrode contact impedance using magic Toeplitz matrix.
abstract: The goal of the paper is to propose a fast and reliable method of simultaneous estimation of conductivity and electrode contact impedances for a homogeneous 2D disk. Magic Toeplitz matrix as the Neumann-to-Dirichlet map with finite width electrodes plays the central role in our linear model, called the gapZ model. This model enables testing of various hypotheses using the F-test, such as the uniformity of electrode impedances and their statistical significance. The gapZ model is compared with the finite element approximation, and illustrated and validated with a phantom tank experiment filled with saline. Further this model was illustrated with the patient breast EIT data to identify bad contact electrodes.
authors.forename: Eugene
authors.initials: E
authors.lastname: Demidenko
authors.forename: Andrea
authors.initials: A
authors.lastname: Borsic
authors.forename: Yuqing
authors.initials: Y
authors.lastname: Wan
authors.forename: Ryan J
authors.initials: RJ
authors.lastname: Halter
authors.forename: Alex
authors.initials: A
authors.lastname: Hartov
mesh_terms: D000465:Algorithms; D001940:Breast / Q000502:physiology*; D003198:Computer Simulation; D058266:Dielectric Spectroscopy / Q000295:instrumentation*; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods*; D006801:Humans; D008954:Models, Biological