The glymphatic system works to excrete waste products from the brain. If it breaks down, cognitive impairment can occur. The system is mainly driven by arterial and brain pulsation. Brain pulsation is recognized as cerebrospinal fluid (CSF) flow artifacts on fluid-attenuated inversion recovery (FLAIR) imaging. We investigated the factors associated with human brain pulsation.CSF flow artifact grade (score) was defined by comparing the highest intensity in a given region of interest (ROI) to thos…