Abstract #1479
SALSAS: Spectral Spatial Excitation Combined with Z-Shimming to Mitigate Through-Plane Signal Loss in Single-Slice and Multiband Gradient Echo Imaging
Anuj Sharma 1 , Manus Donahue 2,3 , V. Andrew Stenger 4 , and William A. Grissom 1,2
1
Biomedical Engineering, Vanderbilt
University, Nashville, TN, United States,
2
Radiology,
Vanderbilt University, TN, United States,
3
Psychiatry,
Vanderbilt University, TN, United States,
4
Medicine,
University of Hawaii, HI, United States
An SNR-efficient method to mitigate signal loss
artifacts in single-slice and simultaneous multi-slice
long echo time gradient echo acqisitions is presented.
Signal improvement comes from the use of spectral
spatial pulses to selectively excite regions that are
refocused with Z-shim. Scan time is minimized by
treating the different z-shim acquisitions as additional
slices in a multi-slice stack. Phantom and in-vivo
experiments at 7T and 3T demonstrate the effectiveness
of the proposed method in reducing signal loss artifacts
in both single-slice and multiband exams.
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