Clinical trials have been used to determine any outstanding harmful effects. Although no subjects have displayed long-term neurological abnormalities as a result of these tests, this is a relatively new procedure and has not been studied enough to predict long term side effects. Even though it is a safer alternative to surgery because it is non-invasive,<unk>  always holds the potential to unintentionally disarrange the neurons in a harmful way and cause minor hemorrhages after long-term exposure.
Transcranial pulsed ultrasound
Intravascular ultrasound
Acoustic angiography
Carotid ultrasonography
Doppler ultrasonography
Laser Doppler imaging
Holter monitor
Cerebral angiography