Figure 5:

Evaluations of DC bias using FT-VSI prepared brain ASL (post labeling delay = 1500 ms, one axial slice) at the B₁⁺ scale of 0.8, 1.0, and 1.2 with (a) scheme 2 using velocity-compensated control and (b) scheme 3 using dynamic phase-cycling. Calculated CBF maps from each dynamic label/control pairs are shown along with their averages. Compared to scheme 2, scheme 3 generated some variable signal through dynamics in some brain regions, such as in frontal cortex, but after averaging, delivered CBF maps with more consistency across different B₁⁺ scales.