Reducing Contamination in PASL using BASSI RF pulses
Warnking J, Pike G
Montreal Neurological Institute, McGill University
BASSI pulses were parameterized to obtain low RF energy PASL label pulses with minimal contamination of static spins outside the label region as well as highly selective PICORE/QUIPSS II saturation pulses allowing for small label gaps. Contamination effects in a QUIPSS II PASL implementation based on these optimized BASSI pulses are assessed in an in vivo study. Residual contamination in the QUIPSS II/BASSI sequence is shown to be reduced by a factor of three, compared to a conventional PASL implementation.