How is Transcranial Doppler (TCD) performed?

Transcranial Doppler (TCD) does not require preparation on the part of the patient. You will be asked to lie down on an examining table or sit upright. The health care professional performing the TCD will apply a harmless gel to your skin over your temple to help the sound waves transmit into the body. Then the person who is conducting the test will pass the transducer over your skin.

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