Developments in Electrical-Property Tomography Based on the Contrast-Source Inversion Method
Department of Radiology, C.J. Gorter Center for High Field MRI, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
Circuits and Systems Group, Delft University of Technology, Faculty of Electrical Engineering, Mathematics and Computes Science, 2628CD Delft, The Netherlands
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 4 December 2018 / Revised: 18 January 2019 / Accepted: 24 January 2019 / Published: 1 February 2019
The main objective of electrical-property tomography (EPT) is to retrieve dielectric tissue parameters from
data as measured by a magnetic-resonance (MR) scanner. This is a so-called hybrid inverse problem in which data are defined inside the reconstruction domain of interest. In this paper, we discuss recent and new developments in EPT based on the contrast-source inversion (CSI) method. After a short review of the basics of this method, two- and three-dimensional implementations of CSI–EPT are presented along with a very efficient variant of 2D CSI–EPT called first-order induced current EPT (foIC-EPT). Practical implementation issues that arise when applying the method to measured data are addressed as well, and the limitations of a two-dimensional approach are extensively discussed. Tissue-parameter reconstructions of an anatomically correct male head model illustrate the performance of two- and three-dimensional CSI–EPT. We show that 2D implementation only produces reliable reconstructions under very special circumstances, while accurate reconstructions can be obtained with 3D CSI–EPT.
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MDPI and ACS Style
Leijsen, R.; Fuchs, P.; Brink, W.; Webb, A.; Remis, R. Developments in Electrical-Property Tomography Based on the Contrast-Source Inversion Method. J. Imaging 2019, 5, 25.
Leijsen R, Fuchs P, Brink W, Webb A, Remis R. Developments in Electrical-Property Tomography Based on the Contrast-Source Inversion Method. Journal of Imaging. 2019; 5(2):25.
Leijsen, Reijer; Fuchs, Patrick; Brink, Wyger; Webb, Andrew; Remis, Rob. 2019. "Developments in Electrical-Property Tomography Based on the Contrast-Source Inversion Method." J. Imaging 5, no. 2: 25.
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