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Electronics, 2019 Any electric transmission lines involving the transfer of power or electric signal requires the matching of electric parameters with the driver, source, cable, or the receiver electronics. Proceeding with the design of electric impedance matching circuit
Vivek T. Rathod
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Imaging the complex impedance in electrical impedance tomography
Clinical Physics and Physiological Measurement, 1992Measuring the reactive component of the bio-impedance enables a full characterisation of the frequency response of a tissue. The amplitude of the reactive component is relatively small in the frequency range generally used in electrical impedance tomography (EIT). Its measurement is therefore more sensitive to errors.
J, Jossinet, C, Trillaud
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Electrical impedance of the pituitary gland
Journal of Neurosurgery, 1970✓ Experimental and clinical measurements of electrical impedance revealed a significant well-delineated difference between the pars distalis and the pars nervosa, providing an accurate and easy means of identifying the tissue interface between these two elements of the pituitary gland.
N T, Zervas, A, Shintani, K S, Pickren
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Multifrequency electrical impedance tomography
Clinical Physics and Physiological Measurement, 1992Multifrequency tomography may be conveniently achieved by sequentially sweeping the probing drive current and measuring the resultant voltages at each frequency. If events change during measurement comparisons between frequencies cannot be made. Mixing several frequency components may decrease acquisition time but increase the complexity of the ...
P M, Record, R, Gadd, F, Vinther
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An electrical impedance tomography microscope
Physiological Measurement, 1996A circular array of 16 electrodes has been constructed for use as an electrical impedance tomography (EIT) microscope. The electrodes were made from 60 microns diameter gold wires anchored to a printed circuit board. The internal diameter of the array was 0.9 mm giving a theoretical spatial resolution of about 100 microns.
H, Griffiths +3 more
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Electrical impedance tomography
Current Opinion in Critical Care, 2012Electrical impedance tomography (EIT) is a useful noninvasive tool for monitoring ventilation finding its way into the clinical setting. The focus of this review is to discuss the balance between the potential for EIT as a clinical monitor accepting a level of uncertainty and the scientific demand for absolute perfection.The controversy concerning ...
Stefan, Lundin, Ola, Stenqvist
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Electric impedance of neuroglia in vitro
Experimental Neurology, 1965Abstract Impedance measurements were carried out on neuroglia cells from tissue culture and newborn animals as studied in vitro . Approximately 240 cells were estimated to be present in the material studied. Membrane resistivity could be measured only at a-c frequencies below 200 cycle/sec. Both electric shocks and KCl applied to the tissue produced
F D, WALKER, T, TAKENAKA
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Development of an electrical impedance tomograph
2011 8th International Conference on Electrical Engineering, Computing Science and Automatic Control, 2011This article describes the design of an electrical impedance tomograph (EIT), with the aim to provide a tool to detect morphological changes in tissues. This design consists of an array of 16 electrodes distributed on a ring way. The 4 points technique is used to record the amplitude of the electrical impedance.
Christopher Montellano +4 more
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Source Consistency Electrical Impedance Tomography
SIAM Journal on Applied Mathematics, 2020In electrical impedance tomography (EIT), multiple electrodes are attached around an imaging domain such as the human thorax to inject currents and measure induced boundary voltages. Using the measured boundary voltage data, cross-sectional images of an internal conductivity distribution are reconstructed.
Tingting Zhang +5 more
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A phantom for electrical impedance tomography
Clinical Physics and Physiological Measurement, 1988A method has been developed for constructing phantoms for electrical impedance tomography (EIT). A mesh of resistors is soldered to pins in a matrix board and forms a physical realisation of a finite element numerical model. To simulate different body tissues, changes in the apparent electrical conductivity and permittivity can be introduced at a ...
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