Carotid angioplasty is a method that opens clogged arteries to avert or treat the stroke. The carotid arteries are situated on each side of your neck and are the primary arteries supplying blood to your brain. The process involves temporarily injecting and inflating a tiny balloon where your carotid artery is blocked to widen the arteries. Carotid angioplasty is often combined with the placing of a small metal coil called a stent inside the blocked artery. The stent assists prop the artery open and reduce the chance of it narrowing again. Carotid angioplasty and stenting may be used when conventional carotid surgery is not feasible or is too risky.