A high pitch sound or "bruit" coming from the carotid artery may indicate significant narrowing. Carotid Artery Ultrasound Doppler Scan - This is a noninvasive diagnostic test that uses ultrasound to ...
Before having the scan, people get an injection of a ... which create pictures of the arteries: Carotid duplex ultrasound – This test uses sound waves to create pictures.
Yet if they are picked up on a scan, then they can cause worry ... In the case of the ultrasound of the Carotid arteries in the neck, surgery to help clear any blockages would not be advised ...