Fig. 1.
(a) Diagram of a 5×720μs SPSP pulse waveform. Amplitude for each sub-pulse is modulated by a Gaussian type envelope within the main lobe. Sub-pulses are played out during both positive and negative slice selection z gradients. (b) If sub-pulses are on during gradient ramps, the standard Gaussian sub-pulse is modified to account for the time variation of the gradient. Note that the modified sub-pulse area and gradient area remain unchanged.
