Table 3. SUVR data (mean ± 1SD) for the three selected ROIs among the three groups of subjects, namely aged-matched healthy controls (HC; n = 9), probable cerebral amyloid angiopathy (CAA; n = 11) and probable Alzheimer’s disease (AD; n = 7).

For the ROI data, statistical comparison among the three groups was carried out using ANOVAs followed by post-hoc Tukey tests whenever the ANOVA was significant. For the occipital/PCC ratio, the comparisons were made using the non-parametric Mann-Whitney test. See Results for details.

	Occipital cortex	Posterior cingulate cortex	Occipital/posterior cingulate ratio
HC	1.02 ± 0.04	1.04 ± 0.05	0.98 ± 0.03
CAA	0.94 ± 0.05	0.99 ± 0.05	0.95 ± 0.06
AD	1.03 ± 0.06	0.98 ± 0.04	1.07 ± 0.05
1. CAA vs HC	p = 0.018	p = 0.112	p = 0.30
2. CAA vs AD	p = 0.006	p = 0.766	p = 0.002
3. AD vs HC	p = 0.806	p = 0.046	p = 0.001