Abstract #5154

EMPIRE: Elastographic Magnetization Prepared Imaging with Rapid Encoding

Alex M Cerjanic^1,2, Alexa M Diano², Matthew DJ McGarry³, and Curtis L Johnson²

¹Department of Medicine, Massachusetts General Hospital, Boston, MA, United States, ²Department of Biomedical Engineering, University of Delaware, Newark, DE, United States, ³Dartmouth College, Hanover, NH, United States

Synopsis

Keywords: Elastography, Data Acquisition

This study demonstrates the use of magnetization preparation for MR elastography in combination with a 3D GRE stack of spirals pulse sequence. By decoupling the motion encoding from the readouts, rapid encoding strategies, such as 3D GRE, can be used. MRE images, displacement, and inverted elastograms are obtained on in vivo human brain. 3D GRE readouts with EMPIRE motion encoding can acquire a complete MRE dataset 33% faster than 2D SE-EPI with similar parallel imaging acceleration factors.

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