Transcranial doppler ultrasound (TCD) is a non-invasive ultrasound method used to examine the blood circulation within the brain. Your doctor has recommended that you have this test to determine the amount of blood flow to certain areas of your brain.
Here at Regional Neurology we have specialized technician to perform this procedure.
During TCD, inaudible sound waves are transmitted through the tissues of the skull. These sound waves reflect off blood cells moving within the blood vessels, allowing the radiologist to interpret their speed and direction. The sound waves are recorded and displayed on a computer screen.
TCD ultrasound images help in the diagnosis of a wide range of conditions affecting blood flow to the brain and within the brain.
Carotid ultrasound
Carotid ultrasound is a safe, painless procedure that uses sound waves to examine the blood flow through the carotid arteries.
Your two carotid arteries are located on each side of your neck. They deliver blood from your heart to your brain.
Carotid ultrasound tests for blocked or narrowed carotid arteries, which can increase the risk of stroke. The results can help your doctor determine a treatment to lower your stroke risk.
Carotid arteries are usually narrowed by a buildup of plaque — made up of fat, cholesterol, calcium and other substances that circulate in the bloodstream. Early diagnosis and treatment of a narrowed carotid artery can decrease stroke risk.
Your doctor will recommend carotid ultrasound if you have transient ischemic attacks (TIAs) or certain types of stroke and may recommend a carotid ultrasound if you have medical conditions that increase the risk of stroke, including:
- High blood pressure
- Diabetes
- High cholesterol
- Family history of stroke or heart disease
- Recent transient ischemic attack (TIA) or stroke
- Abnormal sound in carotid arteries (bruit), detected by your doctor using a stethoscope
- Coronary artery disease
