IC‐O2–01: How do we define amyloid positivity in an asymptomatic population? Comparison of CSF, quantitative PET and clinical PET examinations. (1st July 2013) - Rubin, Brian; Su, Yi; McConathy, Jonathan; Blazey, Tyler; Ponisio, Rosana; Weng, Jin; Hornbeck, Russ; Fagan, Anne; Xiong, Chengjie; Morris, John; Benzinger, Tammie