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Abstract #2446

Matching Motion Sensitivity with TE and TR in Elastography for Faster Scans

Roger C. Grimm1, Jun Chen1, Scott A. Kruse1, Richard L. Ehman1

1Mayo Clinic, Rochester, MN, United States

Elastography acquisitions measure a propagating complex shear wave field at multiple phase points to estimate stiffness. In general there are 3 polarizations, x, y, z. Using the TR to advance the phase in a multi-frequency acquisition has been previously described. The purpose of this work is to examine timing options where the TR provides the phase advance in interleaved 3 polarization acquisitions. This eliminates misregistration of the wave fields images. When there is no gradient dead time, this results in discrete TE/TR and motion sensitivity values.