P4‐353: BASELINE TAU BURDEN MEASURED BY [18F]GTP1 IMAGING IS ASSOCIATED WITH SUBSEQUENT COGNITIVE DECLINE IN PRODROMAL TO MILD ALZHEIMER'S DISEASE. (1st July 2006) - Teng, Edmond; Manser, Paul T.; Ward, Michael; Sanabria-Bohorquez, Sandra; Ray, Rebecca; Baker, Suzanne L.; Kerchner, Geoffrey A.; Weimer, Robby