Abstract #4224

3D CSI-Electrical Properties Tomography

Reijer L. Leijsen¹, Wyger M. Brink¹, Cornelis A.T. van den Berg², Andrew G. Webb¹, and Rob F. Remis³

¹C.J. Gorter Center, Leiden University Medical Center, Leiden, Netherlands, ²Department of Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands, ³Circuits and Systems Group, Delft University of Technology, Delft, Netherlands

The goal of Contrast Source Inversion – Electrical PropertiesTomography is to iteratively reconstruct the conductivity and permittivity of tissue from $$$B_1^+$$$ field data. Up to now, this method has only been implemented in two dimensions. Here we demonstrate a proof-of-principle of a three-dimensional (3D) extension, thereby potentially turning CSI-EPT into a volumetric EPT technique. We present the basic 3D CSI-EPT equations, illustrate the performance of 3D CSI-EPT for realistic 3D body models, and show that accurate reconstructions are obtained even at tissue boundaries. The influence of the magnitude of the electric field on the reconstructions is also discussed.

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