Fig. 1From: Correlations between plasma and PET beta-amyloid levels in individuals with subjective cognitive decline: the FundaciĆ³ ACE Healthy Brain Initiative (FACEHBI)Linear regression between florbetaben(18F) (FBB)-positron emission tomography (PET) global SUVR and AĪ² total plasma (TP)42/40 plasma ratio in SCD subjects. Inverse association between AĪ² TP42/40 plasma ratio and FBB-PET scan. Experimental cut-off point of AĪ² plasma ratio TP42/40 established at 0.08 to reduce the prescreening number of AĪ² FBB-PET scans to 52.8%. CI confidence interval, NPV negative predictive value, PPV positive predictive valueBack to article page