A Transcranial Doppler is a ultrasound test of the brain vessels. It shows blood flow speed in brain arteries. No ionising radiation (sound waves).
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Blood flow speed in brain arteries.
Sickle cell disease screening, after brain bleed.
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.
No ionising radiation (sound waves). Safe in pregnancy.
30 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Ultrasound
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does a tcd show?
Blood flow speed in brain arteries.
Why is a tcd done?
Sickle cell disease screening, after brain bleed.
How do I prepare for a tcd?
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.
Does a tcd use radiation?
No ionising radiation (sound waves). Safe in pregnancy.
How long does a tcd take?
30 minutes
Why is Transcranial Doppler done?
Sickle cell disease screening, after brain bleed.
How do I prepare for Transcranial Doppler?
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.
Is Transcranial Doppler safe in pregnancy?
No ionising radiation (sound waves). Safe in pregnancy.
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