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TCD is a non-invasive ultrasound method used to examine the blood circulation within the brain.
During TCD, sound waves, inaudible to the human ear, are transmitted through the tissues of the skull. These sound waves reflect off blood cells moving within the blood vessels, allowing the radiologist to calculate their speed. The sound waves are recorded and displayed on a computer screen.
Your physician has recommended that you have this test to determine the amount of blood flow to certain areas of your brain. The TCD ultrasound can also be used to monitor blood flow in the brain during surgical procedures.
TCD ultrasound images help in the diagnosis of a wide range of conditions affecting blood flow to the brain and within the brain.
TCD ultrasound may be used with other diagnostic procedures or by itself.
There is no special preparation for the TCD ultrasound.
The gel will be wiped off your skin. Your physician will discuss the test results with you.
Studies have shown ultrasound is not hazardous. There are no harmful side effects. In addition, ultrasound does not use radiation, as X-ray tests do.
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