O3‐04‐02: MICROVASCULAR SIGNATURE OF PRECLINICAL ALZHEIMER'S DISEASE IN A LONGITUDINAL COHORT. (1st July 2019) - Sheikh-Bahaei, Nasim; Sepehrband, Farshid; Barisano, Giuseppe; Acharya, Jay; Rajamohan, Anandh; Kim, Paul; Law, Meng; Toga, Arthur W.; Chui, Helena C.