Abstract #1369

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

Jurgen Henk Runge^1,2, Stefan Heinz Hoelzl¹, Jelizaveta Sudakova¹, Ayse Sila Dokumaci¹, Jules Laurent Nelissen^3,4, 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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