Results 21 to 30 of about 51,325 (326)

High-Precision Electrical Impedance Tomography for Electrical Conductivity of Metallic Materials

open access: yesAdvances in Materials Science and Engineering, 2022
Metal materials are subject to deformation, internal stress distribution, and cracking during processing, all of which affect the distribution of electrical conductivity of the metal. Suppose we can detect the conductivity distribution of metal materials
Shuanfeng Zhao   +6 more
doaj   +1 more source

A mathematical and numerical framework for ultrasonically-induced Lorentz force electrical impedance tomography [PDF]

open access: yes, 2014
We provide a mathematical analysis and a numerical framework for Lorentz force electrical conductivity imaging. Ultrasonic vibration of a tissue in the presence of a static magnetic field induces an electrical current by the Lorentz force.
Ammari, Habib   +4 more
core   +3 more sources

Sparsity prior for electrical impedance tomography with partial data [PDF]

open access: yes, 2014
This paper focuses on prior information for improved sparsity reconstruction in electrical impedance tomography with partial data, i.e. data measured only on subsets of the boundary.
Garde, Henrik, Knudsen, Kim
core   +1 more source

In vivo bioimpedance measurement of healthy and ischaemic rat brain: implications for stroke imaging using electrical impedance tomography. [PDF]

open access: yes, 2015
In order to facilitate the imaging of haemorrhagic and ischaemic stroke using frequency difference electrical impedance tomography (EIT), impedance measurements of normal and ischaemic brain, and clotted blood during haemorrhage, were gathered using a ...
Blochet, C, Dowrick, T, Holder, D
core   +1 more source

Absolute electrical impedance tomography (aEIT) guided ventilation therapy in critical care patients: simulations and future trends [PDF]

open access: yes, 2010
Thoracic electrical impedance tomography (EIT) is a noninvasive, radiation-free monitoring technique whose aim is to reconstruct a cross-sectional image of the internal spatial distribution of conductivity from electrical measurements made by injecting ...
Brown, B.H.   +5 more
core   +2 more sources

A multiscattering series for impedance tomography in layered media [PDF]

open access: yes, 1999
We introduce an inversion algorithm for tomographic images of layered media. The algorithm is based on a multiscattering series expansion of the Green function that, unlike the Born series, converges unconditionally.
Borcea, Liliana, Ortiz, Michael
core   +1 more source

Further investigation of a contactless patient-electrode interface of an Electrical Impedance Mammography system [PDF]

open access: yes, 2010
The Sussex Mk4 Electrical Impedance Mammography (EIM) system is a novel instrument, designed for the detection of early breast cancer, based upon Electrical Impedance Tomography (EIT).
Adams, C   +6 more
core   +1 more source

Comparing D-Bar and Common Regularization-Based Methods for Electrical Impedance Tomography [PDF]

open access: yes, 2019
Objective: To compare D-bar difference reconstruction with regularized linear reconstruction in electrical impedance tomography. Approach: A standard regularized linear approach using a Laplacian penalty and the GREIT method for comparison to the D-bar ...
Adler, A.   +2 more
core   +2 more sources

Roles of electrical impedance tomography in lung transplantation

open access: yesFrontiers in Physiology, 2022
Lung transplantation is the preferred treatment method for patients with end-stage pulmonary disease. However, several factors hinder the progress of lung transplantation, including donor shortages, candidate selection, and various postoperative ...
Hui Jiang   +3 more
doaj   +1 more source

Tomographic imaging and scanning thermal microscopy: thermal impedance tomography [PDF]

open access: yes, 2002
The application of tomographic imaging techniques developed for medical applications to the data provided by the scanning thermal microscope will give access to true three-dimensional information on the thermal properties of materials on a mm length ...
A. Hammiche   +13 more
core   +1 more source

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