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Abstract #1831

Artifact reduction in 3D radial imaging with out-of-volume saturation pulses

Jacob Macdonald1, Oliver Wieben1,2, Scott K Nagle2, and Kevin M Johnson1

1Medical Physics, University of Wisconsin - Madison, Madison, WI, United States, 2Radiology, University of Wisconsin - Madison, Madison, WI, United States

Streaking artifacts in radial acquisitions from undersampling or data inconsistencies can reduce SNR and make it difficult to discern features in low signal areas. Anatomy that is outside of the imaging volume of interest but within the excitation volume can contribute to these artifacts. We used out-of-volume spatial saturation pulses to suppress these streaking artifacts with minimal scan time penalties. In-vivo acquisitions with spatial saturation showed equal or superior quality in all cases. They should be implemented whenever the additional SAR can be tolerated.

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