Patent foramen ovale/right-to-left shunt detection: In this test, a solution is injected into a vein in the forearm.Stroke risk in adults and children with sickle cell anemia: The changed shape of blood cells in sickle cell anemia can lead to blood clots and blocked blood vessels, increasing the risk of stroke.Cerebral microemboli: These are small blood clots that travel through the bloodstream and cause a transient ischemic attack (mini stroke).Stenosis in brain arteries: This is a narrowing or blockage of a section of an artery, most commonly due to atherosclerosis (hardening of the arteries).In this case, it’s a reaction to a brain bleed – a subarachnoid hemorrhage/ brain aneurysm rupture. Vasospasm: This is the narrowing of a section of a blood vessel due to contraction.Acute ischemic stroke: Acute ischemia stroke happens when a blood clot develops in a blood vessel in the brain, cutting off oxygen-rich blood flow to the brain.Transcranial Doppler ultrasound is used to diagnose or monitor a wide range of medical conditions affecting blood flow, including: What medical conditions are diagnosed or monitored with transcranial Doppler ultrasound? The sound waves are recorded and displayed on a computer screen. These sound waves reflect off blood cells moving within your blood vessels, allowing the radiologist or neurologist to interpret their speed and direction. The test is also used to monitor the results of certain treatments, for example, the breakup of clots inside brain arteries.ĭuring TCD, sound waves are sent through the tissues of your skull. Your doctor has recommended that you have this test to diagnosis a medical condition that affects blood flow to and within the brain. Transcranial Doppler (TCD) ultrasound is a painless test that uses sound waves to examine blood flow in your brain. What is a transcranial Doppler ultrasound?
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