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Abstract #5580

Accurate High Dynamic Range Displacement Measurement in MR Elastography Using a Simultaneous Dual-Sensitivity Acquisition

Yi Sui1, Ziying Yin1, Joshua D. Trzasko1, Armando Manduca1, Kevin J. Glaser1, Richard L. Ehman1, and John Huston III1

1Radiology, Mayo Clinic, Rochester, MN, United States

Phase wrapping in MR Elastography (MRE) limits the dynamic range of the displacement information that can be reliably measured. We developed a novel framework that simultaneously acquires data with 2 levels of motion sensitivity, and processes this data in a manner which increases the dynamic range of the accurately measured displacements by 8-10 times. Both shear wave and large bulk (rigid-body) motion in brain can be characterized in a single scan.

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