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dc.contributor.authorBalleza Ordaz, José Marco
dc.contributor.authorPérez Alday, Erick Andrés
dc.contributor.authorVargas Luna, José Miguel
dc.contributor.authorKashina, Svetlana
dc.contributor.authorHuerta Franco, María-Raquel
dc.contributor.authorTorres González, Luis Adolfo
dc.contributor.authorRiu Costa, Pere Joan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.identifier.citationBalleza, J., Pérez, E., Vargas, J., Kashina, S., Huerta-Franco, M., Torres-González, L.A., Riu, P.J. Tidal volume monitoring by a set of tetrapolar impedance measurements selected from the 16-electrodes arrangement used inelectrical impedance tomography (EIT) technique. Calibration equations in a group of healthy males. "Biomedical signal processing and control", 01 Març 2016, vol. 27, p. 68-76.
dc.description.abstractPreviously, our research group obtained a set of calibration equations for being used by an electricalimpedance tomograph (EIT). All equations transform the impedance changes into a measurable volumesignal in a group of healthy males. The performance of EIT, using these equations, was acceptable forrespiration monitoring. The EIT impedance changes were obtained from a set of 16-electrodes placedaround the thoracic box at level of the sixth intercostal space. Each cycle of impedance measurementsis ordered in a matrix (IEITM). Each IEITM’s element depicts a configuration of 4-electrodes. Now, ourmain challenge is to replace the EIT’s 16-electrodes by a 4-electrodes configuration. We analyzed theimpedance changes obtained from each element and the volume determinations obtained by a pneu-motachometer (gold standard) in order to determine the optimal 4-electrodes configuration. For eachselected configuration a set of 20 calibration equations were obtained. The best results were obtained byusing two 4-electrodes configurations. Both consisting in two adjacent electrodes for current injectionand two electrodes for voltage detection.The mean R2of the 20 equations determined by the 16-electrodes information, and for the best two 4-electrode configurations were 0.943 ± 0.010, 0.848 ± 0.062 and 0.690 ± 0.122, respectively. The error (%)of volume determinations obtained by the use of 16-electrodes, and by the use of the two best 4-electrodeconfiguration with regarding to the real volume obtained by pneumotachometer were of 15 ± 6%, 16 ± 4%and 43 ± 41%, respectively. The volume differences between the one obtained by the use of 16-electrodesand that for the best 4 electrode configuration were not significant. We conclude that although thedeterminations of impedance obtained by the best 4-electrode configuration has a lower sensitivity thanthose obtained by the 16-electrodes, it is possible to measure the respiratory pattern in healthy males
dc.format.extent9 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
dc.subjectÀrees temàtiques de la UPC::Ciències de la salut::Medicina::Anatomia i fisiologia humana
dc.subject.lcshBiomedical engineering
dc.subject.lcshRespiratory organs -- Physiology
dc.subject.otherElectrical impedance tomography
dc.subject.otherTetrapolar impedance measurements
dc.subject.otherTidal volume
dc.titleTidal volume monitoring by a set of tetrapolar impedance measurements selected from the 16-electrodes arrangement used inelectrical impedance tomography (EIT) technique. Calibration equations in a group of healthy males
dc.subject.lemacEnginyeria biomèdica
dc.subject.lemacAparell respiratori -- Fisiologia
dc.contributor.groupUniversitat Politècnica de Catalunya. IEB - Instrumentació Electrònica i Biomèdica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorBalleza, J.; Pérez, E.; Vargas, J.; Kashina, S.; Huerta-Franco, M.; Torres-González, L.A.; Riu, P.J.
local.citation.publicationNameBiomedical signal processing and control

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