Carotid and Transcranial Doppler (TCD) ultrasound are non-invasive tests that use sound waves to assess blood flow in the major arteries supplying the brain. Carotid Doppler evaluates the carotid arteries in the neck, while TCD examines blood flow within the brain’s arteries. These tests help detect blockages, narrowing, and stroke risk.
Procedure Breakdown:
- Preparation:
- No special preparation is required.
- Patients may need to remove jewelry or accessories around the neck and head.
- Gel Application:
- A water-based gel is applied to the skin (neck for Carotid Doppler, temples or base of the skull for TCD) to enhance sound wave transmission.
- Ultrasound Imaging:
- A handheld transducer is placed over the carotid arteries or specific skull regions.
- The technician moves the probe to assess blood flow and detect abnormalities like narrowing or turbulence.
- Blood Flow Assessment:
- Doppler ultrasound measures the speed and direction of blood flow.
- High velocities may indicate blockages or narrowing, increasing stroke risk.
- Completion & Results:
- The gel is wiped off, and the procedure is completed in about 30–45 minutes.
- A vascular specialist reviews the results and provides findings to the referring doctor.
Carotid and Transcranial Doppler are safe, painless, and effective tools for evaluating stroke risk and vascular health.
