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Abstract #1369

A novel MR Elastography transducer concept based on a rotational eccentric mass: the gravitational transducer

Jurgen Henk Runge1,2, Stefan Heinz Hoelzl1, Jelizaveta Sudakova1, Ayse Sila Dokumaci1, Jules Laurent Nelissen3,4, Jack Lee1, Jaap Stoker2, Aart Johannes Nederveen2, David Nordsletten1, and Ralph Sinkus1

1Division of Imaging Sciences and Biomedical Engineering, King's College London, London, United Kingdom, 2Radiology, Academic Medical Center, Amsterdam, Netherlands, 3Biomedical NMR, Eindhoven University of Technology, Eindhoven, Netherlands, 4Preclinical and Translational MRI, Academic Medical Center, Amsterdam, Netherlands

Several transducer designs are in use for MR Elastography, based mainly on either pneumatic (or compressed) air or on electromagnetic engine-coils fixed to a lamella. These technologies have enabled significant development within the MR Elastography community and shaped its clinical application. In this abstract, we build on these concepts to introduce a novel transducer that limits image artefacts, limits resonant frequencies and vibrational impurities, and importantly preserves transducer amplitude with frequency; effectively improving the quality of the wave data that can be encoded with MR.

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