FIGURE 7.
Kinetics of brain uptake and washout in rhesus monkey after intravenous injection of 18F-AV-45 (173.9 MBq [4.7 mCi]) are presented. It is evident that uptake in cortex peaked at 7 min, and activity was washed out quickly thereafter. White matter area also displayed good initial uptake, and washout rate was also rapid. It is estimated that brain uptake at peak was about 4.4% of injected dose, which suggested that 18F-AV-45 penetrated normal blood–brain barrier efficiently.