Article Figures & Data
Figures
- Fig 1.
Breakdown of the 18F-FDG-PET cases into degree of match by 3 raters in a combined visual-statistical human classification into 7 (FDG-7) (A) or 2 (FDG-2) (B) categories. A perfect match by the 3 raters is observed for 62% of the cases for FDG-7 and 76% for FDG-2 in total. The AD group shows the highest concordance followed by the MCI and NC groups, in this order, both for FDG-7 and FDG-2.
- Fig 2.
Boxplots of the FDG-PET score against the number of raters who interpreted the 18F-FDG-PET images as P1 (A) and N1 (B) based on the FDG-7 criteria. The FDG-PET score gradually increases as the number of P1 (AD pattern) interpretations increases (Spearman rank correlation coefficient: ρ = 0.59, P < .0001). On the other hand, FDG-PET score gradually decreases as the number of N1 (normal pattern) interpretations increases (ρ = −.64, P < .0001).
- Fig 3.
Scatterplot of the FDG-PET score as contrasted with the combined visual-statistical interpretation determined by the consensus read of 18F-FDG-PET for each clinical group (A, NC; B, MCI; and C, AD). The horizontal line indicates the cutoff level of 0.67 derived by receiver operating characteristic analysis on P1 and N1 cases.
