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Electrical impedance tomography [PDF]

IEEE Signal Processing Magazine, 2001
Electrical impedance tomography (EIT) is an imaging modality that estimates the electrical properties at the interior of an object from measurements made on its surface. Typically, currents are injected into the object through electrodes placed on its surface, and the resulting electrode voltages are measured.
R.S. Blue, Jonathan C. Newell, P.M. Edic, Gary J. Saulnier, David Isaacson   +4 more
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Electrical impedance endotomography

Physics in Medicine and Biology, 2002
In electrical impedance endotomography (EIE), the impedance measuring electrodes are placed at the centre of the region of interest instead of encircling it, as in usual electrical impedance tomography. EIE has been developed for prostate imaging. The developed mathematical model enables the derivation of analytical equations for electric potential ...
Emmanuel Marry, Adrien Matias, J. Jossinet   +2 more
openaire   +3 more sources

Dominant-Current Deep Learning Scheme for Electrical Impedance Tomography

IEEE Transactions on Biomedical Engineering, 2019
Objective: Deep learning has recently been applied to electrical impedance tomography (EIT) imaging. Nevertheless, there are still many challenges that this approach has to face, e.g., targets with sharp corners or edges cannot be well recovered when ...
Zhun Wei, Dong Liu, Xudong Chen
semanticscholar   +1 more source

Imaging the complex impedance in electrical impedance tomography

Clinical Physics and Physiological Measurement, 1992
Measuring 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.
C Trillaud, J Jossinet
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Electrical impedance for an electrolytic cell

Physical Review E, 2006
We analyze in which experimental conditions the concept of electrical impedance is useful for an electrolytic cell. The analysis is performed by solving numerically the differential equations governing the phenomenon of the redistribution of the ions in the presence of an external electric field and comparing the results with the ones obtained by ...
F. C. M. FREIRE, BARBERO, GIOVANNI, SCALERANDI, MARCO   +2 more
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Development of a Portable Electrical Impedance Tomography System for Biomedical Applications

IEEE Sensors Journal, 2018
A portable electrical impedance tomography (EIT) system has been developed with Red Pitaya STEMlab for biomedical applications. The Red Pitaya STEMlab is a portable device to realize voltage generation and data acquisition for the EIT system.
Zifei Xu, Jiafeng Yao, Zheng Wang, Yanli Liu, Hao Wang, Bai Chen, Hongtao Wu   +6 more
semanticscholar   +1 more source

Electrical impedance tomography

Inverse Problems, 2002
Updated (up to 2002, 153 references) theoretical and numerical studies of the inverse problem for the continuum model of EIT which seeks the admittivity \((\gamma(x)= \sigma(x)+ i\omega\varepsilon(x))\) inside a body \(\Omega\) from the knowledge of the Dirichlet to Neumann (DtN) (or the Neumann to Dirichlet (NtD)) map at the boundary \(\partial\Omega\)
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Electrical impedance imaging

IEE Proceedings A Physical Science, Measurement and Instrumentation, Management and Education, Reviews, 1987
Electrical impedance imaging is introduced on a descriptive and historical basis. The physical situation to which it applies is identified, and its representation as mathematical equations is stated. Emphasis is made of the assumptions in the derivation and solution of the equations.
Brian H. Brown, A.D. Seagar, David Charles Barber   +2 more
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High-Precision Electrical Impedance Tomography Data Acquisition System for Brain Imaging

IEEE Sensors Journal, 2018
In electrical impedance tomography (EIT), it is difficult to obtain the intracranial impedance due to the highly resistive skull enclosing the brain. Therefore, a high-precision data acquisition system is required for brain EIT.
Xuetao Shi, Weichen Li, Fusheng You, Xuyang Huo, Canhua Xu, Zhenyu Ji, Ruigang Liu, Benyuan Liu, Yandong Li, F. Fu, Xiuzhen Dong   +10 more
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Electrical Impedance in Dermatology

2020
Electrical impedance spectroscopy (EIS) has been used in dermatology in the last decades for the study of inflammatory dermatosis and skin tumours. Multiple applications in the study of contact dermatitis and atopic eczema have been proposed. More recently NevisenseR (SCIBASE, Sweden), a device using EIS received the approval for the application in the
Susana Puig, Alicia Barreiro-Capurro, Josep Malvehy   +2 more
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