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Abstract #5054

Limitations of 2-D Field Structure Assumptions in Electrical Properties Tomography and its 3-D CSI-EPT Solution

Patrick S. Fuchs1, Reijer L. Leijsen2, and Rob F. Remis1

1Delft University of Technology, Delft, Netherlands, 2Radiology, Leiden University Medical Center, Leiden, Netherlands

CSI-EPT was originally implemented in a two-dimensional formulation and has since been extended to 3-D to allow for volumetric reconstructions without any assumptions on the field structures. Since the 3-D method is computationally much more complex than its 2-D counterpart, here we investigate the 2-D assumption and its requirements. Unfortunately the 2-D assumption breaks down when the object in consideration is not sufficiently longitudinally invariant, even if the fields can still be considered E-polarised. Therefore, to achieve accurate and robust reconstructions of EPs in a practical or clinical setting the 3-D CSI-EPT method is a recommended starting point.

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