[P1–403]: [F‐18]AV‐1451 PET IN NON‐DEMENTED ADULTS WITH DOWN SYNDROME IS RELATED TO BOTH AMYLOID AND COGNITION. (1st July 2017) - Cohen, Ann; Laymon, Charles M.; Minhas, Davneet; Wolfe, Cathleen; Lao, Patrick J.; Mathis, Chester; Sabbagh, Marwan N.; Zaman, Shahid; Klunk, Bill E.; Handen, Benjamin L.; Christian, Brad T.