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Abstract #0030

Prepared MR Elastography

Tanguy Boucneau1, Brice Fernandez2, Luc Darrasse1, and Xavier Maître1
1Université Paris-Saclay, CEA, CNRS, Inserm, BioMaps, Orsay, France, 2Applications & Workflow, GE Healthcare, Orsay, France

By decoupling motion and spatial encoding, magnitude contrast MR Elastography could be performed for the first time at ultrashort echo times (12 µs). On the basis of a motion-sensitizing magnetization preparation, the available total magnetic moment is sensitized to the motion induced in the tissues so the information can be efficiently carried over by the MR signal magnitude when the selected imaging pulse sequence is applied. The new paradigm allows also for shorter total acquisition times as demonstrated here in a set of homogeneous and heterogeneous phantoms with up to 5-fold acceleration factors.

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