FSE Cusp artifact removal using novel saturation method
Yongchuan Lai 1 , Weiwei Zhang 1 , Baogui Zhang 1 , and Bing Wu 1
GE Healthcare, Beijing, China
FSE cusp artifacts are caused by collective effects of
the gradient non-linearity and B0 inhomogeneity in
regions distant from the magnet center. This can present
as the so-called feather-like artifacts associated with
sagittal plane FSE images when the phase encoding is
along the S/I direction. We propose a simple yet
effective method to eliminate the root cause of the
artifacts by spatial saturation and further improve its
practical implementation to reduce total RF bandwidth
and overall SAR with two-stage saturation: frequency
saturation and special saturation.
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