P1‐358: ALZHEIMER'S RELATED ALTERED MICROSTRUCTURE INTEGRITY IN DOWN SYNDROME. (1st July 2019) - Rosas, H. Diana; Mercaldo, Nathaniel; Hsu, Eugene; Brickman, Adam M.; Pulsifer, Margaret; Pang, Deborah; Jordan, Courtney; Doran, Eric; Yassa, Michael A.; Keator, David; Sathishkumar, Mithra; Price, Julie C.; et al.