Figure 11.

The effect of the b-value and the number of gradients at l = 6. At higher b-values we observe many spurious peaks that disappear with the increase of the number of gradients (see yellow marked rectangles). At NG ≥ 46 there is not a significant difference between the profiles at b = 2000 s/mm² and b = 3000 s/mm². Given that the spurious peaks are slightly more prominent at b = 3000 s/mm², and that lower b-values are more attractive with respect to the total scanning time, we conclude that b = 2000 s/mm² and NG ∈ [48; 72] are the optimal combination of parameters.