3-D Contrast Source Inversion-Electrical Properties Tomography

3-D Contrast Source Inversion-Electrical Properties Tomography

Leijsen, R.L. (Leiden University Medical Center)
Brink, Wyger M. (Leiden University Medical Center)
van den Berg, Cornelis A.T. (University Medical Center Utrecht)
Webb, A. (Leiden University Medical Center)
Remis, R.F. (TU Delft Signal Processing Systems)

2018

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.

Electrical properties tomography
three-dimensional contrast source inversion
magnetic resonance imaging
electromagnetic Green’s tensor field representations

http://resolver.tudelft.nl/uuid:929db54e-bef2-4020-a0ff-9da0b6cf8c2f

https://doi.org/10.1109/TMI.2018.2816125

0278-0062

IEEE Transactions on Medical Imaging, 37 (9), 2080-2089

Accepted Author Manuscript

Institutional Repository

journal article

© 2018 R.L. Leijsen, Wyger M. Brink, Cornelis A.T. van den Berg, A. Webb, R.F. Remis