Spatial filtering in electrical impedance tomography

We propose a new method to localize electrical conductivity changes in the human head using Electrical Impedance Tomography (EIT). In EIT, a localized conductivity change produces a change in the electric potential distribution which is equivalent to a potential generated by a dipole at the same loc...

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Autores principales: Fernández Corazza, Mariano, Ellenrieder, Nicolás von, Muravchik, Carlos Horacio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ingeniería
Linear Constrain Minimum Variance Beamforming
electrical conductivity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84585
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84585
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Linear Constrain Minimum Variance Beamforming
electrical conductivity
spellingShingle Ingeniería
Linear Constrain Minimum Variance Beamforming
electrical conductivity
Fernández Corazza, Mariano
Ellenrieder, Nicolás von
Muravchik, Carlos Horacio
Spatial filtering in electrical impedance tomography
topic_facet Ingeniería
Linear Constrain Minimum Variance Beamforming
electrical conductivity
description We propose a new method to localize electrical conductivity changes in the human head using Electrical Impedance Tomography (EIT). In EIT, a localized conductivity change produces a change in the electric potential distribution which is equivalent to a potential generated by a dipole at the same location. We propose to estimate the location of conductivity changes with the same techniques used to solve the Electroencephalography source localization problem. In particular, we show an adaptation of the Linear Constrain Minimum Variance Beamforming technique to perform this estimation. We simulate a localized 10% conductivity change in a realistic model of the human head to apply the method. Results show that depending on the noise level, the method can accurately localize the conductivity change.
format Articulo
Articulo
author Fernández Corazza, Mariano
Ellenrieder, Nicolás von
Muravchik, Carlos Horacio
author_facet Fernández Corazza, Mariano
Ellenrieder, Nicolás von
Muravchik, Carlos Horacio
author_sort Fernández Corazza, Mariano
title Spatial filtering in electrical impedance tomography
title_short Spatial filtering in electrical impedance tomography
title_full Spatial filtering in electrical impedance tomography
title_fullStr Spatial filtering in electrical impedance tomography
title_full_unstemmed Spatial filtering in electrical impedance tomography
title_sort spatial filtering in electrical impedance tomography
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/84585
work_keys_str_mv AT fernandezcorazzamariano spatialfilteringinelectricalimpedancetomography
AT ellenriedernicolasvon spatialfilteringinelectricalimpedancetomography
AT muravchikcarloshoracio spatialfilteringinelectricalimpedancetomography
bdutipo_str Repositorios
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