Transcranial Doppler Ultrasound
Transcranial Doppler (TCD)
Transcranial Doppler is a specialized ultrasound that measures blood flow through the arteries of the brain. It is painless, non-invasive, and provides valuable information about cerebral circulation without radiation or contrast.
When would my neurologist order a TCD?
- Stroke or TIA evaluation
- Intracranial arterial narrowing
- Sickle cell disease
- Detection of microemboli
- Monitoring cerebral blood flow
- Evaluation of dizziness related to vascular disease

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1. Who Performs The Test?
TCD is performed by our trained technologists and interpreted by your board-certified neurologist.
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2. Why Would My Doctor Order This Test?
Your doctor may order TCD to evaluate stroke risk, blood vessel disease, or assess blood flow in the brain.
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3. What Should I Expect?
A small ultrasound probe is placed on your head using ultrasound gel. The test is painless and takes about 30–45 minutes.
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4. When Will I Get My Results?
Your test will be reviewed and interpreted by your neurologist. Results are typically available within 5–7 business days and will be uploaded securely to your patient portal.
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5. What Should I Expect?
A small ultrasound probe is placed on your head using ultrasound gel. The test is painless and takes about 30–45 minutes.
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6. When Will I Get My Results?
Your test will be reviewed and interpreted by your neurologist. Results are typically available within 5–7 business days and will be uploaded securely to your patient portal.
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7. How Will This Test Help Manage My Condition?
It helps detect narrowing or blockage, monitor treatment progress, and guide stroke prevention strategies.

