The diagnostic cerebral ultrasound (TCD) is a non-invasive ultrasound method used to assess the blood circulation to the brain. Your doctor may have recommended that you have this test to determine the amount of blood flow to certain areas of your brain.
Diagnostic cerebral ultrasound helps your doctor in the diagnosis of conditions affecting blood flow to the brain and within the brain. During the test, sound waves, inaudible to the human ear, are transmitted through the tissues of the head. These sound waves reflect off blood cells moving within the blood vessels, allowing their speed to be calculated.