Altered Clearance in Alzheimer's Disease and Cerebral Amyloid Angiopathy.

With our focus on Alzheimer's disease (AD) and cerebral amyloid angiopathy (CAA), the authors herein provided a comprehensive overview of impaired amyloid beta and tau clearance pathways observed through advanced neuroimaging techniques such as dynamic contrast-enhanced MR imaging, arterial spin labeling, phase contrast MR imaging, PET, and functional MR imaging. The findings suggest the role of impaired degradation clearance, blood-brain barrier clearance, perivascular clearance, glymphatic system clearance, and cerebrospinal fluid dynamics in AD and CAA pathogenesis.