Cerebral blood flow meter has a history of appearing since the early 20th century, created by scientist Schulter. Although initially there were many shortcomings, after a long period of improvement, this method became widely popular and became an effective tool used to assess the state of cerebral circulation.

Cerebral blood flow measurement is understood as the process of recording the resistance change curve of cerebral blood vessels when a high frequency and low intensity alternating current (30KHz-1mA) passes through. From the results obtained, doctors can accurately assess the hemodynamics of the brain and changes in the state of cerebral blood vessel function of the patient.