Fig. 7

a Relative differences in R₁ (% bias) plots of R₁ when comparing Atlas-, ZTE- or MaxProb-MRAC to ⁶⁸Ge-AC as gold standard for different clusters of brain regions. b Relationship between R₁ values derived using various MRAC methods and ⁶⁸Ge-AC as reference, where solid lines represent Deming regressions and dashed line identity