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Abstract #4516

Retrospective gradient delay correction in multi-shot multi-echo rosette acquisition

Alexey V. Dimov1, Nanyque A. Boyd2, Keigo Kawaji2,3, and Timothy J. Carroll1

1Radiology, University of Chicago, Chicago, IL, United States, 2Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, United States, 3Medicine, University of Chicago, Chicago, IL, United States

Rosette k-space sampling is an attractive tool for a variety of applications such QSM, DCE, etc. However, as many non-Cartesian acquisition schemes, rosette is highly susceptible to the system-specific gradient delays. We present a robust technique utilizing intrinsic symmetries of multi-shot rosettes, which allows to reconstruct images with minimal artifacts due to misalignment of the k-space points.

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