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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: J Magn Reson Imaging. 2012 Oct;36(4):10.1002/jmri.23597. doi: 10.1002/jmri.23597

Figure 2.

Figure 2

MRE pulse sequence diagrams are shown depicting the RF pulses; gradients in the frequency-encoding, phase-encoding, and slice-select directions; and the applied motion (RF, Gx, Gy, Gz, and M, respectively). On the left is a GRE MRE sequence for imaging 60-Hz mechanical motion using a 16.7-ms gradient-moment-nulled (GMN) motion-encoding gradient (MEG) applied along Gz. On the right is a SE-EPI MRE sequence for imaging 60-Hz motion using 2 bipolar 6.5-ms MEG, 1 on each side of the refocusing pulse and synchronized to the motion. Both sequences are shown with GMN imaging gradients and spatial presaturation pulses.

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