Reduced Field-of-View RF Pulse Designs with Fat-Suppression
Sung K, Nayak K
University of Southern California
Increase in acquisition speed can be achieved by exciting only the region of interest (ROI) when the ROI is smaller than the field-of-view. A new 2D spatially selective RF design method to limit the excited FOV with fat-suppression is presented. Minimum-phase filter design is used to reduce the excitation pulse duration while the selectivity of the phase-encoding profile remains the same. The sub-lobe spacing is used to control off-resonance behavior and suppress fat.