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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