Results 1 to 10 of about 77,020 (73)
Electrical impedance tomography [PDF]
Annals of Translational Medicine, 2018 Continuous assessment of respiratory status is one of the cornerstones of modern intensive care unit (ICU) monitoring systems. Electrical impedance tomography (EIT), although with some constraints, may play the lead as a new diagnostic and guiding tool for an adequate optimization of mechanical ventilation in critically ill patients.
Ana Abella +3 more
openaire +4 more sources
Multiscale electrical impedance tomography [PDF]
Journal of Geophysical Research: Solid Earth, 2003 Electrical impedance tomography aims to recover the electrical conductivity underground from surface and/or borehole apparent resistivity measurements. This is a highly nonlinear inverse problem, and linearized inverse methods are likely to produce solutions corresponding to local minima of the misfit function to minimize.
Pessel, Marc, Gibert, Dominique
openaire +4 more sources
Acousto-electrical speckle pattern in Lorentz force electrical impedance tomography [PDF]
Physics in Medicine and Biology 60 (2015), pp 3747-3757, 2015 Ultrasound speckle is a granular texture pattern appearing in ultrasound imaging. It can be used to distinguish tissues and identify pathologies. Lorentz force electrical impedance tomography is an ultrasound-based medical imaging technique of the tissue electrical conductivity. It is based on the application of an ultrasound wave in a medium placed in
arxiv +1 more source
Effective Impedance over Ordered Fields [PDF]
Journal of Mathematical Physics 62, 033502 (2021), 2019 In this paper, we study properties of effective impedance of finite electrical networks and calculate the effective impedance of a finite ladder network over an ordered field. Moreover, we consider two particular examples of infinite ladder networks (Feynman's network or LC-network and CL-network, both with zero on infinity) as networks over the ...
arxiv +1 more source
Mumford-Shah regularization in electrical impedance tomography with complete electrode model [PDF]
Inverse Problems 38 065004 (2022), 2021 In electrical impedance tomography, we aim to solve the conductivity within a target body through electrical measurements made on the surface of the target. This inverse conductivity problem is severely ill-posed, especially in real applications with only partial boundary data available. Thus regularization has to be introduced.
arxiv +1 more source
Electrical Impedance Tomography of Electrolysis
PLOS ONE, 2015 The primary goal of this study is to explore the hypothesis that changes in pH during electrolysis can be detected with Electrical Impedance Tomography (EIT). The study has relevance to real time control of minimally invasive surgery with electrolytic ablation.
Meir, Arie, Rubinsky, Boris
openaire +6 more sources
Electrical Impedance of Isolated Amnion
Biophysical Journal, 1965 The electrical impedance of the guinea pig amniotic membrane was measured, under standardized conditions, over the frequency range of 20 to 7000 cycles/second. This impedance can be represented analytically by a simple frequency-dependent function which is precisely of the form of the Debye relaxation equation.
George A. Misrahy +2 more
openaire +3 more sources
Broadband electrical impedance spectroscopy for dynamic electrical bio-impedance characterization
, 2023 The electrical impedance of biological samples is known in the literature as Electrical Bioimpedance (EBI). The Electrical Bioimpedance enables to characterize physiological conditions and events that are interesting for physiological research and medical diagnosis.
openaire +4 more sources
Electrical Impedance of Cardiac Muscle [PDF]
Circulation Research, 1961 Impedances of cat cardiac muscle and frog sartorius muscle were compared at several frequencies before and after interspace ion depletion. Strips of parallel fibers were obtained from papillary muscles and ventricular trabeculae. The impedances were measured in the direction of fiber orientation.
T. Hoshiko, Nick Sperelakis
openaire +2 more sources
Time-Constant-Domain Spectroscopy: An Impedance-based Method for Sensing Biological Cells in Suspension [PDF]
, 2020 Impedance measurement is a common technique to characterize and detect the electrical properties of biological cells. However, to decode the underlying physical processes, it requires complex electrical models alongside prior knowledge of the sample under study.
arxiv +1 more source