Blocked arteries can cause serious problems when they prevent blood from reaching different parts of your body, but the effects will depend on which area is affected. A blocked artery in your arm can cause pain and other symptoms that may affect your daily life.
The carotid Doppler scan is a special type of ultrasound that can be used to check for blockages in the blood vessels that supply your brain. If these arteries are narrowed or blocked then it can increase the chances that you will have a stroke. You may require treatment if a problem is detected during the carotid Doppler scan in order to reduce this risk and ensure a good blood supply for your brain.