Fig. 2

Objective motion quality assurance protocol. a Depicts ROI placement for T1-weighted assessment. The size of the ROI was between 650 and 850 pixels or 6.50 and 8.50 cm² (yellow rectangle). The ratio of the mean signal intensity (yellow ovals) anterior/superior ROIs was required to be ≤2.0. b Depicts an example of slice dropout (red circles) in one volume of a diffusion-weighted scan. Volumes were excluded if any slice dropout was present, and the number of excluded volumes was required to be ≤5 out of a total of 30 volumes