Proceedings ArticleDOI
Improving the image reconstruction in Electrical Impedance Tomography (EIT) with block matrix-based Multiple Regularization (BMMR): A practical phantom study
Tushar Kanti Bera,Samir Kumar Biswas,K. Rajan,Nagaraju Jampana +3 more
- pp 1346-1351
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TLDR
In this paper, a block matrix based multiple regularization (BMMR) technique was used for conductivity image reconstruction in electrical impedance tomography (EIT) using practical phantoms.Abstract:
Conductivity image reconstruction is studied with a Block Matrix based Multiple Regularization (BMMR) technique in Electrical Impedance Tomography (EIT) using practical phantoms. The response matrix (JTJ) is partitioned into several sub-block matrices and the largest element of each sub-block matrices is taken as regularization parameter for the nodes of the FEM mesh contained by that sub-block. Boundary potential data are collected from practical phantoms with different inhomogeneity configurations and the conductivity images are reconstructed in a Model Based Iterative Image Reconstruction (MoBIIR) algorithm. Conductivity images, reconstructed with BMMR technique, are compared with the images obtained with Single-step Tikhonov Regularization (STR) and modified Levenberg-Marquardt Regularization (LMR) methods. Results show that BMMR technique reduces the reconstruction error and reconstruct the better conductivity images by improving the conductivity profile of the domain under test for all the phantoms. Image analysis showed that the BMMR method improves image contrast parameters, conductivity profiles, and spatial resolution of the reconstructed images.read more
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Book ChapterDOI
Introduction to the Finite Element Method
Nathan Ida,João P. A. Bastos +1 more
TL;DR: This chapter introduces the finite element method (FEM) as a tool for solution of classical electromagnetic problems and discusses the main points in the application to electromagnetic design, including formulation and implementation.
Journal ArticleDOI
Bioelectrical Impedance Methods for Noninvasive Health Monitoring: A Review.
TL;DR: The working principles, applications, merits, and demerits of these methods has been discussed in detail along with their other technical issues followed by present status and future trends.
Journal ArticleDOI
A MATLAB-Based Boundary Data Simulator for Studying the Resistivity Reconstruction Using Neighbouring Current Pattern
Tushar Kanti Bera,J. Nagaraju +1 more
TL;DR: A MATLAB-based boundary data simulator (BDS) is developed to generate accurate boundary data using neighbouring current pattern for assessing the EIT inverse solvers and it is noticed that for the BDS with 2048 elements, the boundary data for all inhomogeneities with a diameter larger than 13.3% of that of the phantom are accurate enough to reconstruct the resistivity images in EIDORS-2D.
Book ChapterDOI
Electrical Impedance Tomography (EIT): A Harmless Medical Imaging Modality
Tushar Kanti Bera,J. Nagaraju +1 more
TL;DR: This chapter will present a brief review on the available medical imaging modalities and focus on the need of an alternating method like Electrical Impedance Tomography (EIT), which has been extensively researched in different fields of science and engineering due to its several advantages.
Journal ArticleDOI
A New Algorithm for Image Reconstruction of Electrical Capacitance Tomography Based on Inverse Heat Conduction Problems
TL;DR: In this article, a new algorithm of image reconstruction for electrical capacitance tomography (ECT) is introduced, based on the analogy between image reconstruction and inverse heat conduction problems, which determines the conductivity value and the boundary of an unknown object inside a circular domain.
References
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Book ChapterDOI
Introduction to the Finite Element Method
Nathan Ida,João P. A. Bastos +1 more
TL;DR: This chapter introduces the finite element method (FEM) as a tool for solution of classical electromagnetic problems and discusses the main points in the application to electromagnetic design, including formulation and implementation.
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