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Abstract #5073

An alternative to phase image-based Magnetic Resonance Elastography (MRE) using k-space data processing

Nad├Ęge Corbin1,2, Elodie breton1, Michel de Mathelin1, and Jonathan Vappou1

1ICube, University of Strasbourg, CNRS, IHU Strasbourg, Strasbourg, France, 2Wellcome Trust Centre for Neuroimaging, UCL Institute of Neurology, London, United Kingdom

MR Elastography (MRE) requires substantial data processing involving phase image reconstruction, wave enhancement and inverse problem solving. The objective of this study is to propose an alternative reconstruction method based on direct k-space data processing, particularly adapted to applications requiring fast MRE measurements such as the monitoring of elasticity changes. Elastograms are directly reconstructed from raw MR data without prior phase image reconstruction, circumventing thereby the delicate step of phase unwrapping. The k-space MRE method shows promising results by providing elasticity values similar to the ones obtained with conventional MRE in phantoms and in vivo in porcine liver.

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