Enlarged perivascular spaces(EPVSs)are one of the imaging biomarkers of cerebral small vessel disease(CSVD),and associated with other pathological changes of CSVD,worse cognitive function,and aging.This review de-scribes the imaging characteristics and visual rating of EPVSs using magnetic resonance imaging and summarizes the re-search progress of EPVSs in Alzheimer disease in recent years in order to promote the understanding of this field.