Figure 2:

Simulated Mz-velocity profiles and Mz-position profiles of FT-VSI label and control pulse trains at a B₁⁺ scale range of 0.8 – 1.2 and their subtractions with (a,b) scheme 1 using velocity-insensitive control; (c,d) scheme 2 using velocity-compensated control; and (e,f) scheme 3 using dynamic phase-cycling. Compared to schemes 1 and 2, scheme 3 yielded both velocity and spatial responses with much less susceptibility to B₁⁺ variations.