Figure 7:

(a) GM and WM distributions of fitted amideCEST signal differences (ΔZ_amide) as well as the corresponding apparent relaxation rates (b: R_amide) for all subjects (n=5). GM and WM regions show very similar distribution of ΔZ_amide. After correction with the rotating frame relaxation method, WM regions show slightly higher contrast in the rotating frame relaxation rate R_amide. Comparison of fitted amideCEST (c: ΔZ_amide) and the corresponding rotating frame relaxation rates (d: R_amide) in GM and WM for five healthy subjects. Comparison of amideCEST (e:ΔZ_amide) and the rotating frame relaxation rates (f: R_amide) in GM and WM for the same subject (n=3, subject 2, 4 and 5) at two different sessions i.e., scan1(S1) and scan 2 (S2) over two days. The error bar is the standard derivation for each subject.