Velocity Selective Adiabatic Pulses for Arterial Spin Labeling
Luis Hernandez-Garcia1, Jon-Fredrik Nielssen2, and Douglas Noll1
1FMRI Laboratory, University of Michigan, Ann Arbor, MI, United States, 2Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
We introduce a
class of adiabatic RF pulses that can invert the magnetization of spins moving
at specific velocity bands, regardless of their position within the coil. Velocity selective adiabatic pulses (VSAI) are more
robust to B1 inhomogeneity than their non-adiabatic counterparts. We discuss
the theory and design considerations and demonstrate their utility in an ASL
experiment on a human brain at 3T.
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