Fig. 3From: Normalization of CSF pTau measurement by Aβ40 improves its performance as a biomarker of Alzheimer’s diseaseRegions with significant association between CSF pTau/Aβ40 and tau PET. a Correlation coefficients between CSF pTau/Aβ40 and tau PET SUVRs in Freesurfer-defined regions were illustrated in a bar graph and b brain map. Abbreviations: Aβ = amyloid-β; FTP = 18F-flortaucipir; pTau = phosphorylated tau; Spearman R = Spearman’s correlation coefficient; SUVR = standardized uptake value ratioBack to article page