Figure 5.

The experimentally derived plots of MTR_Rex,amide and MTR_Rex,NOE as a function of the actual B ₁ values in WM. The traces were obtained by segmenting the relative B ₁ map (Figure 7A) into the different regions between 50% and 150% in steps of 1% and calculating the corresponding MTR_Rex,amide and MTR_Rex,NOE contrast resulting from all available CEST datasets. The straight black lines represent the linear regression relation between the corresponding metrics and B ₁ in the B ₁ range 0.1–0.5 μT. The Pearson correlation coefficient (R) and the corresponding p‐value are provided. **Statistical significance at the level p < 0.005.