Keywords: New Trajectories & Spatial Encoding Methods, fMRI Acquisition
Motivation: Looping Star is a silent fMRI pulse sequence that is often highly undersampled in k-space at high spatial resolution.
Goal(s): This work aims to improve spatial resolution by increasing coverage of k-space over time.
Approach: We propose to use a cycle of 10 spherical sampling patterns with UNFOLD post-processing to reduce aliasing artifacts.
Results: Our methods significantly reduced spatial artifacts and improved fMRI activation t-scores.
Impact: The results of this work will improve spatial resolution Looping Star fMRI studies with high undersampling rates.
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