81:, the technique differs from conventional tomographic methods, in which high resolution images are formed of slices of a material. The measurement electrodes, which are metallic plates, must be sufficiently large to give a measureable change in capacitance. This means that very few electrodes are used, typically eight to sixteen electrodes. An N-electrode system can only provide N(N−1)/2 independent measurements. This means that the technique is limited to producing very low resolution images of approximate slices. However, ECT is fast, and relatively inexpensive.
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industries. Due to its very low spatial resolution, ECT has not yet been used in medical diagnostics. Potentially, ECT may have similar medical applications to electrical impedance tomography, such as monitoring lung function or detecting ischemia or hemorrhage in the brain.
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Jaworski AJ and
Dyakowski T, Application of electrical capacitance tomography for measurement of gas–solid flow characteristics in a pneumatic conveying system, Measurement Science and Technology, 12, 2001, pp 1109–19
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Applications of ECT include the measurement of flow of fluids in pipes and measurement of the concentration of one fluid in another, or the distribution of a solid in a fluid. ECT enables the visualization of
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Beck, M.S.; Byars, M.; Dyakowski, T.; Waterfall, R.; He, R.; Wang, S.J.; Yang, W.Q. (1997). "Principles and
Industrial Applications of Electrical Capacitance Tomography".
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Rymarczyk, T.; Szumowski, J.; Adamkiewicz, P.; TchĂłrzewski, P.; Sikora, J. (2017). "Electrical
Capacitance Tomography and Optical Detection in Quality Control System".
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M Soleimani, W R B Lionheart, Nonlinear image reconstruction in electrical capacitance tomography using experimental data, Meas. Sci. Technol., 16, 2005, pp 1987–1996
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S M Huang, A Plaskowski, C G Xie and M S Beck, Capacitance-based tomographic flow imaging system, Electronics
Letters, 24 (7), 1988, pp 418–19.
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Dynamic imaging in ECT - On the left, seven cylindrical objects moving along the probe. On the right, a series of probe cross-sectional images.
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Wanta, Damian; Makowiecka, Oliwia; Smolik, Waldemar T.; Kryszyn, Jacek; Domański, Grzegorz; Midura, Mateusz; Wróblewski, Przemysław (2022).
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Although capacitance sensing methods were in widespread use the idea of using capacitance measurement to form images is attributed to
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323:"Numerical Evaluation of Complex Capacitance Measurement Using Pulse Excitation in Electrical Capacitance Tomography"
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distribution in the interior of an object from external capacitance measurements. It is a close relative of
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Wanta, Damian; Smolik, Waldemar T.; Kryszyn, Jacek; Wróblewski, Przemysław; Midura, Mateusz (2022).
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157:"A Run-Time Reconfiguration Method for an FPGA-Based Electrical Capacitance Tomography System"
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York, T. A. (2001). "Status of electrical tomography in industrial applications".
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ECT image sequence - An object made of acrylic glass, rotating inside a probe.
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Electrical capacitance tomography system with connected 16-electrode sensor
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356:"Capacitively Coupled Electrical Impedance Tomography for Brain Imaging"
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94:, which play an important role in the technological processes of the
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and is proposed as a method for industrial process monitoring.
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Three-dimensional electrical capacitance tomography
55:) is a method for determination of the dielectric
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360:IEEE Transactions on Medical Imaging
354:Jiang, Y. D.; Soleimani, M. (2019).
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127:Electrical resistivity tomography
49:Electrical capacitance tomography
122:Electrical impedance tomography
61:electrical impedance tomography
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253:Journal of Electronic Imaging
132:Industrial Tomography Systems
340:10.3390/electronics11121864
174:10.3390/electronics11040545
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300:10.1177/002029409703000702
218:PrzeglÄ…d Elektrotechniczny
372:10.1109/TMI.2019.2895035
77:Although usually called
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412:Nondestructive testing
407:Electrical engineering
230:10.15199/48.2017.12.53
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137:Process tomography
70:and co-workers at
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161:Electronics
401:Categories
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143:References
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111:See also
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72:UMIST
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