applied-current electrical impedance tomography
Electrical Impedance Tomography Image Reconstruction Using Iterative Lavrentiev and L Curve Based Regularization Algorithm
... the electrical properties in the interior of a medium from measurements on its boundary, which is particularly important for medical and industrial applications ...or current measurements is acquired from ...
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Adaptive mesh refinement techniques for electrical impedance tomography
... been applied to resistance or impedance modelling in a biomedical context, there exists some work on applications of adaptive mesh refinement (AMR) in modelling heart current sources (Johnson and ...
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Electrical Impedance Tomography using EIDORS in a Closed Phantom
... to current converter producing a current of 20 mA at 5 KHz, a closed phantom with 16 electrode set up and a multimeter to measure resulting differential voltages ...having electrical conductivity of ...
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Boundary Element formulation for Electrical Impedance Tomography
... Abstract . This paper concerns the modelisation and simulation of the forward problem of Electri- cal Impedance Tomography (EIT), i.e. the computation of an electrical potential due to an ...
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Recent progress on Frequency Difference Electrical Impedance Tomography
... Electrical Impedance Tomography(EIT) is a non-invasive imaging technique which aims to provide the cross- sectional distribution of electrical impedance inside the human ...the ...
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A quantitative evaluation of drive pattern selection for optimizing EIT based stretchable sensors
... Abstract: Electrical Impedance Tomography (EIT) is a medical imaging technique that has been recently used to realize stretchable pressure ...the applied touch pressure ...performing ...
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Development of a high speed current injection and voltage measurement system for electrical impedance tomography based stretchable sensors
... each current injection ...each current injection time step, the mean value of the samples is calculated after the static conditions are ...is applied in different positions over the ...
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Design and Development of a Microscopic Electrical Impedance Tomography System
... the current source is the essential part of EIT ...constant current sources and alternative current sources to be excited through the electrodes ...the current source performance of the EIT ...
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Comparison of total variation algorithms for electrical impedance tomography
... A current of peak amplitude 133 A and frequency 1 kHz was injected and boundary voltages were measured according to the polar ...which current is preferentially applied to diametrically opposing ...
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Multifrequency methods for Electrical Impedance Tomography
... first applied to clinical research in 1987 by the Sheffield University research group, led by Barber and Seagar in the Department of Medical Physics and Clinical Engineering at Royal Hallamshire ...single ...
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Digital biomedical electrical impedance tomography based on FPGA
... A sine current signal with small amplitude and fixed frequency is applied to a pair of electrodes. The differen- tial voltages on the other neighboring electrodes are col- lected in sequence. Each measured ...
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Discrete mathematical models for electrical impedance tomography
... Electrical Impedance Tomography (EIT) is a non-invasive, portable and low-cost medical imaging ...Different current patterns are injected to the surface of a conductive body and the ...
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Cardiac mapping of electrical impedance tomography by means of a wavelet model
... The electrical current used in the electrodes was 5 mA at 125 ...was applied to the EIT signals of perfusion images, ob- tained by means of the ECG-gated temporal averaging of the EIT raw ...
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Optimized breath detection algorithm in electrical impedance tomography
... 28]. Current injections with amplitude of 3 mA rms at a frequency of 200 kHz were applied using a skip 4 injection ...each current injection, then DC and system related voltage changes were ...
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Electrical Impedance Tomography of Fast Neural Activity In The Brain
... wave current was injected into the nerve using two of the electrode hooks and impedance was measured via another two electrodes (figure ...The impedance was measured whilst injecting various ...
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A novel time-difference electrical impedance tomography algorithm using multi-frequency information
... were applied to synthetic data, and the recon- structed images were ...A current of peak amplitude 1 mA was injected into two electrodes placed polarly, and the difference between the voltages on all ...
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A REVIEW ON BREAST ELECTRICAL IMPEDANCE TOMOGRAPHY CLINICAL ACCURACY
... Electrical Impedance Tomography (EIT) is a non-invasive procedure using electrical impedance to image the human breast. Due to its mobility and using non-compression technique it is ...
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New Solutions for the Three-Dimensional Electrical Impedance Equation and its Application to the Electrical Impedance Tomography Theory
... Still, recent works have shown that the convergence speed of the Taylor series in formal powers is very good (see e.g. [6]), compared to other classical methods for expanding functions. Remark 15: When considering the ...
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Modern Trends in Development of Electrical Impedance Tomography in Medicine
... With that, the main areas of research are the following: optimal placement of electrodes and lead system; effective materials for electrodes; optimal amperage; optimal frequency; defining necessary and sufficient number ...
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Electrical impedance tomography as a tool for phenotyping plant roots
... Electrical impedance tomography (EIT) shares the same concepts as ...alternating current rather than a direct ...of current in RSAs depends highly on the characteristics of the AC ...
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