A procedure called carotid artery stenting (CAS) has emerged as a minimally invasive alternative to surgery, called carotid endarterectomy (CEA), for patients with dangerous narrowing of the arteries supplying blood to the brain. However, questions remain about the best uses of this procedure - especially whether it is an appropriate alternative to surgery for “low-risk” patients, according to a special article in the January/February issue of Annals of Vascular Surgery.