Statistical estimation of EIT electrode contact impedance using magic Toeplitz matrix.
Statistical estimation of EIT electrode contact impedance using magic Toeplitz matrix.
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DOI:
10.1109/tbme.2011.2125790
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发表时间:
2011-08
期刊:
影响因子:
--
通讯作者:
Hartov A
中科院分区:
文献类型:
--
作者:
Demidenko E;Borsic A;Wan Y;Halter RJ;Hartov A
The goal of this paper is to propose a fast and reliable method of simultaneous estimation of conductivity and electrode contact impedances for a homogeneous 2-D 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.