A perfectly refocused RF pulse design using zero-padding
Pauly J, Zhu L
In this work, we present an improved algorithm for perfectly refocused RF excitation pulses using zero-padding techniques, based on the conventional SLR algorithm. Three modes of zero-padding are also introduced, and each has its own pros and cons. Simulation results show this method can effectively suppress the residual phase in the excited profile after the beta profile phase precompensation. The choice of the three zero-padding modes and the number of zero-padding samples shows tradeoffs among echo time, phase suppression effectiveness, and RF pulse selectivity.