Exploració per tema "Electrical impedance tomography"
Ara es mostren els items 1-16 de 16
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Assessing pulmonary function parameters non-invasively by electrical bioimpedance tomography
(Springer Nature, 2023-12-28)
Article
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Avaliação de 3 diferentes aproximações para a solução do problema direto da tomografia de impedância elétrica
(Universitat Politècnica de Catalunya. CIMNE, 2015)
Article
Accés obertNeste trabalho foram comparadas 3 diferentes soluções para o problema direto da tomografia de impedância elétrica utilizando o método das diferenças finitas. Nesta técnica são posicionados elétrodos no contorno/fronteira ... -
Efecto de las capacidades parásitas a tierra en las medidas de impedancia eléctrica con dos terminales
(2011)
Text en actes de congrés
Accés obert -
Effect of high-flow nasal cannula and body position on end-expiratory lung volume: A cohort study using electrical impedance tomography
(2013-04-01)
Article
Accés obert: Electrical impedance tomography measures changes in lung impedance, which are mainly related to changes in lung volume. We used electrical impedance tomography to inves- tigate the effects of high-flow nasal cannula ... -
Electrical impedance as a technique for civil engineer structures surveillance : considerations on the galvanic insulation of samples
(Institute of Physics, 2007)
Article
Accés obertSince Electric Impedance Spectroscopy (EIS) has been widely used to determine physical properties of materials, it becomes necessary to evaluate different error contributions. In this work, it is studied the effect of the ... -
Electrical impedance spectroscopy cell monitoring in a miniaturized bioreactor
(2013)
Text en actes de congrés
Accés obertElectrical impedance spectroscopy measurement of biologic materials provides information about viable cell density as well as cell size and shape homogeneity. Several experimental and even commercial biomass density probes ... -
Electrical impedance tomography for hand gesture recognition for HMI interaction applications
(2022-07-18)
Article
Accés obertElectrical impedance tomography (EIT) is based on the physical principle of bioimpedance defined as the opposition that biological tissues exhibit to the flow of a rotating alternating electrical current. Consequently, ... -
Electrical impedance tomography to measure spirometry parameters in chronic obstructive pulmonary disease patients
(Sociedad Mexicana de Ingeniería Biomedíca, 2022-12-01)
Article
Accés obertSpirometry is a test for the diagnosis of chronic obstructive pulmonary disease. It is a technique that can be intolerant due to the essential use of a mouthpiece and a clamp. This study proposes the use of electrical ... -
Implementation of a low cost prototype for electrical impedance tomography based on the integrated circuit for body composition measurement AFE4300
(Scitepress, 2018)
Text en actes de congrés
Accés obertElectrical impedance tomography (EIT) is a technique of image reconstruction of the electrical conductivity distribution in a tissue or region under observation. An electrical system for EIT comprises complex hardware and ... -
Monitoring cell monolayers during electroporation: Electrical impedance spectroscopy measurements
(2013)
Text en actes de congrés
Accés obertElectroporation or electropermeabilization is a phenomenon observed when lipid bilayers, generally cell membranes, are exposed to high electric field pulses becoming transiently permeable to molecules that under regular ... -
Propagation of measurement noise through backprojection reconstruction in electrical impedance tomography
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-06-30)
Article
Accés obertA framework to analyze the propagation of measurement noise through backprojection reconstruction algorithms in electrical impedance tomography (EIT) is presented. Two measurement noise sources were considered: noise in ... -
Realistic head modeling based system for the estimation of tissue conductivities for brain stimulation from accurate electrical impedance tomography measurements
(Universitat Politècnica de Catalunya, 2019-07-03)
Treball Final de Grau
Accés restringit per decisió de l'autorTranscranial current stimulation (tCS) is a non-invasive brain stimulation technique based on the application of weak electrical currents in the scalp (ă 4 mA) at low frequencies (0-1 kHz). ... -
Tidal Volume (TV) post-process obtained with electrical impedance tomography on a group of chronic obstructive pulmonary disease (COPD) patients. Use of adjust equations
(2010)
Text en actes de congrés
Accés obertEquations used to estimate ventilation out of EIT images, validated on healthy volunteers show a significant bias and a larger variance when were applied on a COPD patients group. The differences in estimation values were ... -
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
(2016-03-01)
Article
Accés obertPreviously, 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 ... -
tidal volume monitoring by electrical impedance tomography (EIT) using different regions of interest (ROI): calibration equations
(2015-04-01)
Article
Accés obertset of calibration equations was previously obtained to transform the lung impedance changes obtained by electrical impedance tomography (EIT), using all frame's elements, into a measurable volume signal. In order to study ... -
Toward noninvasive monitoring of plant leaf water content by electrical impedance spectroscopy
(2023-07-01)
Article
Accés obertPlant water content is one key factor that affects the wellbeing of plants. Furthermore, detecting plant water needs in a timely manner is important when considering irrigation strategies (water management). A first step ...