P2‐391: NON‐INVASIVE IMAGING OF BRAIN CLEARANCE PATHWAYS USING MULTIPLE ECHO TIME ARTERIAL SPIN LABELLING: AN AQUAPORIN‐4 STUDY

Mean difference in hippocampal subfield volumes (mean of left and right) between groups using linear regression models. Key: YOAD1⁄4young onset Alzheimer’s disease; HC 1⁄4 Healthy controls; Typ AD1⁄4amnestic led typical Alzheimer’s disease; PCA1⁄4posterior cortical atrophy (visual symptom led Alzheimer’s disease);95%CIS1⁄4 95% confidence intervals; TIV1⁄4total intracranial volume; GC-DG1⁄4Molecular and Granule Cell Layers of the Dentate Gryus; HATA1⁄4Hippocampal Amygdala Transition Area; *p<0.05 – standard statistical threshold; **p1⁄4<0.004 Bonferroni corrected threshold