nonlinear electrical impedance tomography
An Influence of the Noise on the Imaging Algorithm in the Electrical Impedance Tomography
... Electrical impedance tomography (EIT) is a non-invasive imaging technique, which aims to reconstruct images of internal electrical property (conductivity, permittivity and permeability in some ...
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Adaptive mesh refinement techniques for electrical impedance tomography
... Our results indicate that it is possible to reduce the number of nodes required by at least a factor of three to obtain an accurate image reconstruction, over a uniform refinement strategy. This results in at least an ...
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Electrical impedance tomography imaging using a priori ultrasound data
... In this paper the finite element method (FEM) has been used to solve the forward problem of EIT. This is imple- mented in Matlab using codes from EIDORS2D and EIDORS3D [16,17]. A triangular mesh was used for the FEM ...
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Recent progress on Frequency Difference Electrical Impedance Tomography
... Abstract. Although time-difference EIT(tdEIT) has shown promise as a medical EIT imaging tech- nique such as monitoring lung function, static EIT has suffered from forward computational model errors including boundary ...
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Modern Trends in Development of Electrical Impedance Tomography in Medicine
... of nonlinear optimization; studying feasibility of using internal electrodes for improving accuracy; calibration of information and measurement systems; numerical interpolation methods; combined influence of ...
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Design and Development of a Microscopic Electrical Impedance Tomography System
... decade. Electrical Impedance tomography (EIT) is seen to be playing a big role to improve and establish a modern approach of supervision and imagining physiological state of materials that depends on ...
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A REVIEW ON BREAST ELECTRICAL IMPEDANCE TOMOGRAPHY CLINICAL ACCURACY
... breast impedance distribution which is based on the structural parameters of human breast tissue or metabolic processes in the tissues of interest and in the surrounding ...
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Electrical Impedance Tomography using EIDORS in a Closed Phantom
... Thus Electrical Impedance Tomography is used to tackle challenging problem of detection of abnormalities in human tissue as well as the inhomogeneities in ...high electrical conductivity as ...
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Digital biomedical electrical impedance tomography based on FPGA
... From the figure, we know that the channels’ consis- tency is not as good as expected. There are several fac- tors affecting the consistency, such as electrodes size, installation spacing, communication cables’ ...
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Low Frequency Bio-Electrical Impedance Mammography and Dielectric Measurement
... XCIII. Methods of in silico Breast Phantom Experiment. To assess the capability of the sensor for breast cancer detection, and to evaluate the three types of image reconstruction (ie., conductance, permittivity and phase ...
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Development of an agilent voltage source for electrical impedance tomography applications
... Electrical Tomography (ET) is a new imaging technique well known for its portability, safety, inexpensiveness and ...called electrical resistance tomography ...called electrical ...
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DESIGN AND IMPLEMENTATION OF PRECISE HARDWARE FOR ELECTRICAL IMPEDANCE TOMOGRAPHY (EIT)
... Figure A1 shows different schematic circuits of the VCCS which have been used in practical tests. As it can be seen in Table A1, the results of several experiments are shown briefly. These tests were done on the ...
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Electrical impedance tomography system: an open access circuit design
... an electrical cur- rent to the object using a set of electrodes, and measuring the developed voltage between other electrodes ...Potential Tomography (APT) and Adaptive Current Tomography (ACT) ...
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Optimization of the centre ground method of Electrical Impedance Tomography System
... EIT is an emerging imaging technique which is used for imaging electrical conductivity within the body using surface measurements [Barber and Brown , (1984)]. It has wide applications in biomedical imaging like ...
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A Precision Transconductance for Electrical Impedance Tomography Using CMOS Technology
... Creating device with multiple threshold voltage is to apply different bias voltage to the base terminal of the transistor. In this circuit apply different bias voltage to the transistors. These circuits have large ...
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A fast parallel solver for the forward problem in electrical impedance tomography
... Abstract—Electrical impedance tomography (EIT) is a noninva- sive imaging modality, where imperceptible currents are applied to the skin and the resulting surface voltages are ...
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Cardiac mapping of electrical impedance tomography by means of a wavelet model
... in Electrical impedance tomography (EIT) pulmonary perfusion images, a model of wavelet transform was ...Computerized Tomography scan (CT-scan) ...
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Electrical impedance tomography in acute respiratory distress syndrome
... EIT is a noninvasive, radiation-free clinical imaging tool to monitor, in real time and at the bedside, the distribu- tion of ventilation. EIT image reconstruction is based on the estimation of the resistivity changes ...
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Electrical Impedance Tomography of human brain function
... Similar mechanisms to those discussed above are expected to cause impedance changes in humans. Non-invasive brain imaging has been performed by single photon emission computed tomography (SPECT), positron ...
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Measurement of ventilation and cardiac related impedance changes with electrical impedance tomography
... of impedance change ...related impedance signal without the need for filtering, but lacks the ability to measure the interactions between ventilation and cardiac ...
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