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Abstract #3422

Mitigation of Artefacts caused by the Transceive Phase Assumption in Electrical Properties Tomography

Ulrich Katscher1, Thierry Meerbothe2,3, Stefano Mandija2,3, Cornelis van den Berg2,3, and Christian Findeklee1
1Philips Innovative Technologies, Hamburg, Germany, 2Department of Radiotherapy, Division of Imaging and Oncology, UMC Utrecht, Utrecht, Netherlands, 3Computational Imaging Group for MR Therapy and Diagnostics, UMC Utrecht, Utrecht, Netherlands

Synopsis

Keywords: Electromagnetic Tissue Properties, Electromagnetic Tissue Properties

Motivation: Mapping the patient’s conductivity using “Electrical Properties Tomography” (EPT) yields valuable diagnostic information.

Goal(s): Artefacts from the “Transceive Phase Assumption” (TPA), as usually applied for EPT, shall be reduced.

Approach: The measurement of a first patient position (e.g. “head first”) is combined with a (measured or mimicked) second position (e.g. “feet first”).

Results: The approach successfully reduces artefacts arising from TPA. Although achieving less artefact reduction, mimicking the second position appears to be the preferred method, because measuring the second position is too cumbersome for clinical practice.

Impact: The presented simple approach is able to increase the accuracy of electric conductivity reconstructed with “Electrical Properties Tomography” (EPT), and thus, might help to enable EPT as clinically relevant diagnostic tool.

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