We propose the use of Hadamard encoding for Magnetic Resonance Elastography (MRE) of the full displacement vector field (4D-MRE). To this end, motion is encoded along the four diagonals of the regular cube spanned by the main gradient axes. This allows for a factor four higher phase accumulation compared to classical, unbalanced four-point encoding within the same acquisition time. In this abstract, we demonstrate the increase in phase-to-noise ratio for a gel phantom and show the direct benefit of using Hadamard encoding in-vivo to capture high-quality wave displacement maps in the brain.
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