Figure 6.
Comparative studies of four 18F PET imaging agents (10, AV-45; 23, AV-138; 24, AV-144 and 25, AV-19) targeting Aβ plaques in living human brain - AD (Alzheimer’s disease); HC (healthy control). The scale for the Y axis represents SUV value. By visual inspection one can easily translate the specific vs non-specific binding ratio in different regions of the brain. Three PET imaging tracers, 10, AV-45; 23, AV-138; and 24, AV-144, displayed the desired properties for detecting Aβ plaques in the brain of AD patients. One final candidate, 10, AV-45, was selected for commercial development.