Carotid artery stenosis is one of the major causes of stroke or TIA

The carotid artery supplies blood to the brain and face. When it becomes narrowed by a build-up of fat (plaque), blood flow to the brain is reduced. Reduced blood flow and clots which form may both lead to a stroke or Transient Ischemic Attack (TIA).

To diagnose carotid artery plaque, a doctor uses a stethoscopeto to listen for Carotid Bruit sounds in the neck. Ultrasound and MRI tests are used to confirm the diagnosis.