Figure 3:

Bloch simulations of the proposed VS pulse with FOV_v =140 cm/s for coronary $10\le \left|v\right|\le 130cm/s$ (left) and for myocardial velocities $\left|v\right|\le 3cm/s$ before (top) and after (bottom) optimization of sub-pulse amplitudes. Bloch simulations are shown for $\text{Δ}f=0$ and $b1=0.5-1$ as well as $b1=1$ and $\left|\text{Δ}f\right|\le 125Hz$. The VS pulse achieves better labeling efficiency of flowing signal (green regions) after optimization, especially for different off-resonance values. In addition, it can be seen that the VS pulse allows for less spurious labeling of moving myocardium (purple regions) after optimization.