Carotid and transcranial Doppler ultrasound imaging are noninvasive imaging tests that use sound waves to examine blood flow through the arteries and brain. This painless test does not use radiation and can provide results in roughly 60 minutes. It is especially useful for those who are at high risk of stroke or carotid artery disease.
If you are looking for carotid or transcranial Doppler ultrasound in the Cayman Islands, then contact Cayman Neurology for your appointment today.
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Carotid ultrasound studies are a noninvasive imaging procedure used to obtain images of the carotid arteries in the neck. The procedure involves using a handheld ultrasound probe to obtain these images.
A transcranial doppler (TCD) ultrasound study uses the same equipment to measure the blood flow in the brain, including the vertebral artery.
These procedures do not use ionizing radiation; there are no needles or contrast dye. Instead, they use a handheld device that emits sound waves to obtain images of these blood vessels. These diagnostic procedures are often used together to determine blood clot risk in those who have a higher risk of stroke or conditions such as sickle cell disease.
Carotid and transcranial Doppler studies are used together to evaluate the blood flow from the heart to the brain. They can assess stroke risk from blocked or narrowed arteries or in those who have sickle cell disease. Carotid artery ultrasound can be used to detect carotid artery and vertebral artery disease or atherosclerotic carotid plaque buildup.
TCD can be used to identify blood clots or vasospasm in the cerebral arteries. These tests can also monitor blood flow changes after a subarachnoid hemorrhage. You may also require a TCD before or after vascular surgery.
The risk factors for carotid artery and vertebral artery disease that might indicate the need for these studies include the following:
Additionally, those with sickle cell disease will begin screening from age two.
A carotid and transcranial Doppler ultrasound are usually done at the same time. There is no special preparation you need to do before the ultrasound. Your clinician will usually follow these steps:
A carotid ultrasound usually takes around 30 minutes, and a TCD can take up to an hour. There are no known risks or harmful effects, and follow-up tests can be done as needed.
The test results will indicate the percentage of blockage in your arteries. This is known as arterial stenosis. A normal result will come back with no narrowing or blockage detected. If a blockage is found, further action may be needed.
In addition to the blockage percentage, your clinician will look at the plaque characteristics to make a diagnosis. The results will guide the next steps, including further testing, treatment, or routine follow-up appointments.
Early detection through carotid and transcranial Doppler tests can help prevent blood clots and reduce stroke risk. At Cayman Neurology, we provide these tests in our Cayman Islands office. Book your appointment today.
No; both procedures are painless, noninvasive tests.
There is no special preparation required. You might want to come to the appointment with clothing that allows easy access to your neck.
Blockage is reported as a percentage referred to as stenosis. Higher percentages may indicate greater stroke risk and guide treatment decisions.
Patients with stroke risk factors, sickle cell disease, high blood pressure, high cholesterol, or a family/personal history of cerebrovascular disease should consider taking these tests.
Routine TCD monitoring typically begins around age 2.