Spatially averaged MRE parameters in four regions of the brain.

(a) Spatially averaged MRE parameters and φ in four regions of the brain (WM – white mater, TH – thalamus, HCN – head of caudate nucleus, CCG – corpus callosum genu) based on normalized atlases averaged over 23 healthy volunteers (fig.6) in the drive frequency range from 30 Hz to 60 Hz, standard deviations [SD] given in brackets represent regional variation. (b) Mean values of the spatially averaged and φ over the same ROIs in the non-normalized and φ maps of each volunteer, standard deviations [SD] given in brackets represent subject variation among 23 volunteers.