Association between amyloid burden measurements and clinical variables. (A) Florbetapir SUVr versus MMSE; (B) PiB SUVr versus MMSE; (C) Florbetapir SUVr versus CDRSB; (D) PiB SUVr versus CDRSB; (E) Florbetapir SUVr versus EYO; (F) PiB SUVr versus EYO. All SUVr measurements have been converted to the Centiloid scale. Abbreviations: CDRSB, CDR sum of boxes; EYO, estimated years to symptom onset; MMSE, Mini–Mental State Examination; PET, positron emission tomography; PiB, Pittsburgh compound B; SUVr, standardized uptake value ratio.