What is a transcranial Doppler study?

Also known as: transcranial Doppler ultrasound, TCD ultrasound, TCD study.

Ultrasound is a medical imaging technique that uses sound waves to produce images of the inside of the body. A transcranial Doppler study is an ultrasound that is used to view and examine the circulation of blood in and around the brain. The technique is useful for children or young adults with sickle cell disease to determine their risk of stroke. It measures the velocity of blood flow in the middle cerebral artery.

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Reviewed by: Athena C Pefkarou, MD

This page was last updated on: 1/29/2019 3:21:13 PM