Table 2. Diagnostic paradigm using the combined results from both early- and late-phase whole-cortex ¹¹C-PiB-PET in suspected CAA-related lobar intra-cerebral hemorrhage.

Late-phase 11C-PiB	Early-phase 11C-PiB	Interpretation
+	+	CAA likely &
-	-	CAA unlikely but possible
-	+	CAA unlikely but possible
+	-	Not informative

&: However does not formally differentiate between underlying CAA and AD.