3-D Contrast Source Inversion-Electrical Properties Tomography

Journal article (2018)

Authors

R.L. Leijsen Leiden University Medical Center
Wyger M. Brink Leiden University Medical Center
Cornelis A.T. van den Berg University Medical Center Utrecht
A. Webb Leiden University Medical Center
R.F. Remis Signal Processing Systems - EEMCS
Research Group
Signal Processing Systems (EEMCS) (TU Delft)
Copyright: © 2018 R.L. Leijsen, Wyger M. Brink, Cornelis A.T. van den Berg, A. Webb, R.F. Remis
DOI: https://doi.org/10.1109/TMI.2018.2816125
Magnetic resonance imaging Electrical properties tomography Three-dimensional contrast source inversion Electromagnetic Green’s tensor field representations
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Published Date

2018

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Signal Processing Systems

Abstract

Contrast source inversion  electrical properties tomography (CSI-EPT) is an iterative reconstruction method to retrieve the electrical properties (EPs) of tissues from MR data. The method is based on integral representations of the electromagnetic (EM) field and has been shown to allow EP reconstructions of small structures as well as tissue boundaries with compelling accuracy. However, to date CSI-EPT has been implemented for two-dimensional (2D) configurations only which limits its applicability. In this paper, a full three-dimensional (3D) extension of the CSI-EPT method is presented, to enable CSI-EPT to be applied to realistic 3D scenarios. Here, we demonstrate a proof-of-principle of 3D CSI-EPT and present reconstructions of a 3D abdominal body section and a 3D head model using different settings of the transmit coil. Numerical results show that the full 3D approach yields accurate reconstructions of the EPs, even at tissue boundaries and is most accurate in regions where the absolute value of the electric field is highest.