Background: During the last two decades, flow-sensitive MRI techniques have been applied widely for quantitative and qualitative assessment of CSF flow dynamics. Objective: to detect the accuracy of CSF flowmetry in diagnosis of normal pressure hydrocephalus and its use in prediction of shunt responsiveness for better selection of patients benefiting from VP shunt. Methods: Our cross-sectional study included 30 patients (18 males and 12 females, age range 40-85 years old), who visited the neurology and neurosurgery outpatient clinics at Kasr El-ainy hospital. Patients present with at least 2 of the classic symptoms from the clinical triad of normal pressure hydrocephalus: dementia, urinary incontinence, gait disorders. Conventional MRI and MRI CSF flowmetry examinations were done in the Kasr El Ainy hospital radiology department. MRI CSF flowmetry was done before and after CSF tapping