P4‐366: MONITORING BLOOD‐BRAIN‐BARRIER DISRUPTION FOLLOWING ABETA IMMUNOTHERAPY USING GADOLINIUM‐ENHANCED MRI IN A PDAPP MOUSE MODEL. (1st July 2014) - Blockx, Ines; Verhoye, Marleen; Roose, Dimitri; Guns, Pieter‐Jan; Zago, Wagner; Einstein, Steven; Van der Linden, Annemie; Bard, Frederique