"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 10, 2018

contents of issue      DOI  10.30898/1684-1719.2018.10.19     full text in Russian (pdf)  

Differential measurements in electric field tomography: proof of concept using computer simulation


A. V. Korjenevsky, Yu. V. Gulyaev, E. V. Korjenevskaya

Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Mokhovaya 11-7, Moscow 125009, Russia


The paper is received on October 16, 2018


Abstract. Electric Field Tomography (EFT) is a method of electromagnetic quasistatic tomography enabling contactless obtaining of information about the spatial distribution of the electrical properties of the object under study, probing it with a variable electric field. The problem with the implementation of EFT is the extraction of the useful signal (phase shift) related with Maxwell-Wagner relaxation in the object under study from the total measured change in the phase of the signal. The largest contribution to the measurement error in the unipolar EFT systems proposed earlier is made by the variations in the electrical capacitance of the measuring electrodes and the object under study relative to the common circuit of the system. The objective of this work is to demonstrate the feasibility of EFT system with differential excitation and field detection, which can significantly reduce the effect of such errors and other interference on the measurement results. The method of numerical simulation demonstrates the localization of the sensitivity zone of differential measurements near the equipotential line of the electric field. This makes it possible to use known methods for solving the inverse problem of quasistatic tomography, in particular, the method of convolution and back projection along the lines of maximum sensitivity. It turned out that both phase and amplitude measurements can be used to reconstruct images in the differential EFT.

Keywords: quasistatic electromagnetic tomography, electric field, visualization, finite differences in the time domain.


1.     A. V. Korzhenevsky. Contactless tomography of conducting media using the quasi-static alternating electric field. Journal of Communications Technology and Electronics, 2004, Vol. 49, No. 6, pp. 716-721

2.     A. V. Korjenevsky. Maxwell-Wagner relaxation in electrical imaging. Physiol. Meas., 2005, Vol. 26, No. 2, pp.† S101-S110

3.     A. V. Korjenevsky. Electric field tomography for contactless imaging of resistivity in biomedical applications.† Physiol. Meas., 2004, Vol. 25, No. 1, pp 391-401

4.     A. V. Korjenevsky, T. S. Tuykin. Experimental demonstration of electric field tomography.† Physiol. Meas., 2010, Vol. 31, pp. S127-S134

5.     Yu. V. Gulyaev, A. V. Korjenevsky, T.S. Tuykin,† V.A. Cherepenin. Vizualizing eectrically conducting media by electric field tomography. Journal of Communications Technology and Electronics, 2010, Vol. 55, No. 9, pp. 1062-1069

6.     A. V. Korjenevsky, T. S. Tuykin. Phase measurement for electric field tomography. Physiol. Meas., 2008, Vol. 29, pp. S151-S161

7.     K. S. Yee. Numerical solution of initial boundary value problems involving Maxwellís equations in isotropic media. IEEE Transactions on Antennas and Propagation, 1966, Vol. AP-14, No. 3, pp. 302-307.

8.     Solving Maxwell's Equations Using the FDTD Method [online]. Site of Alexander Zelenin. Available at http://zfdtd.narod.ru/

9.     A. V. Korzhenevskii, V. N. Kornienko, M. Yu. Kulítiasov, Yu. S. Kulítiasov, V. A. Cherepenin. Electrical Impedance Computerized Tomograph for Medical Applications. Instruments and Experimental Techniques, 1997,† Vol. 40, No. 3, pp. 415-421

10. A. V. Korjenevsky, T. S. Tuykin. Electric field tomography: setup for single-channel measurements. Physiol. Meas., 2007, Vol. 28, pp. S279-S289


For citation:

A. V. Korjenevsky, Yu. V. Gulyaev, E. V. Korjenevskaya. Differential measurements in electric field tomography: proof of concept using computer simulation. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 10. Available at http://jre.cplire.ru/jre/oct18/19/text.pdf
DOI  10.30898/1684-1719.2018.10.19