From amyloid PET to plasma biomarkers: A multimodal imaging framework for early diagnosis and staging of Alzheimer's disease
Abstract INTRODUCTION Alzheimer's disease (AD) is biologically defined by amyloid beta and tau pathology. Available biomarkers enable early diagnosis but differ in targets, accessibility, and utility. This review synthesizes evidence for plasma biomarkers, magnetic resonance imaging (MRI), and positron emission tomogra...