Modern Trends in Development of Electrical Impedance Tomography in Medicine

Aleksanyan, Grayr; Gorbatenko, N. I.; Tarasov, Alexander Dmitrievich

doi:10.13005/bbra/1444

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…For the functional, we use formula (5). The process termination is the fulfillment of inequality (6).…”

Section: Algorithm For Solving the Inverse Problemmentioning

confidence: 99%

“…Currently, EIT is developing rapidly. The research geography covers more than 20 countries [6]. In the field of medicine, electrical impedance tomographs have been developed and put into operation for examining the mammary gland, in gynecology [7,8], for monitoring the respiratory system during artificial lung ventilation [9-11], as well as many technical means for bioimpedancemetry [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Recovery algorithm of electrical conductance distribution in the volume of the object of research in electrical impedance tomography

et al. 2023

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An efficient, rigorously substantiated algorithm for solving electrical impedance tomography problems is proposed and tested. The features of the algorithm are the use of a methodology based on solving conditionally correct inverse problems and the presence of a search stage for the optimal current configuration that provides the maximum sensitivity of the problem functionals to the desired parameters, which allows to speed up the iterative process and improve the accuracy of the problem solution. The algorithm can be used in medicine and industry to solve diagnostic problems.

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“…For the functional, we use formula (5). The process termination is the fulfillment of inequality (6).…”

Section: Algorithm For Solving the Inverse Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recovery algorithm of electrical conductance distribution in the volume of the object of research in electrical impedance tomography

et al. 2023

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“…When solving the problems of electrical impedance tomography (EIT) [1][2][3][4][5][6][7][8], much attention is paid to the development of effective algorithms for the reconstruction and visualization of the conductivities of the internal structures of biological objects (BO) [9]. However, in this case, it is necessary to take into account all the complexity and specifics of BO, which make it difficult to use a large number of developed algorithms [10].…”

Section: Introductionmentioning

confidence: 99%

A symmetry - based algorithm to determine the presence of the internal structure heterogeneity of the of a biological object

Aleksanyan

2023

E3S Web of Conf.

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This article proposes a two-level approach for solving the problems of electrical impedance tomography of biological objects, which consists in successively applying the methods of “rough” and “fine” reconstruction to the potentials measured on the surface of the object. To perform a “rough” reconstruction procedure, it is proposed to use a method for determining the presence of heterogeneity in the internal structure of a biological object based on the symmetry algorithm. Thus, consistent localization and identification of the boundaries of the heterogeneity of the internal structure of the biological object is carried out. It is shown that when analyzing data for an arbitrary biological object, the symmetry characteristic of the type of objects under study can be taken into account, and deviations from such a characteristic symmetry will indicate deviations from the norm in the structure of a biological object.

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“…Due to the fact that the electrical properties of BO tissues depend on the frequency of the injecting current, the use of MMEIT in clinical practice is an important tool for obtaining diagnostic information. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] The aim of this work is to study the influence of the frequency of the injected current on the result of measurements, that is, on the impedance. Since devices for carrying out MMEIT operate with a limited range of load resistance, which in this case is the impedance of the BO, the results of this work can be applied to determine the conditions for using this type of device.…”

Section: Introductionmentioning

confidence: 99%

Research of the conductivity of organic and inorganic media in multi-angle multi-frequency electrical impedance tomography

et al. 2017

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Abstract. The work is devoted to the study of the impedance of organic and inorganic media containing inhomogeneities at different frequencies of the injecting current in order to determine the conditions for using the device for multi-angle multi-frequency electrical impedance tomography. The paper provides a method of obtaining data and analysis of the obtained measurement results. Based on the analysis, the dependences of the integral parameter of the change in the potential difference correlating with the total impedance on the frequency of the injected current are determined. To estimate the repeatability of the obtained measurement results, an analysis of the measurement data array was carried out by calculating the standard (root-mean-square) deviation for each obtained in measurement value. Based on the analysis of deviations, the dependences of the standard deviation of the obtained integral parameters on the frequency of the injected current are also determined.

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Modern Trends in Development of Electrical Impedance Tomography in Medicine

Cited by 6 publications

References 13 publications

Recovery algorithm of electrical conductance distribution in the volume of the object of research in electrical impedance tomography

Recovery algorithm of electrical conductance distribution in the volume of the object of research in electrical impedance tomography

A symmetry - based algorithm to determine the presence of the internal structure heterogeneity of the of a biological object

Research of the conductivity of organic and inorganic media in multi-angle multi-frequency electrical impedance tomography

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