 He had a carotid ultrasound, which revealed total occlusion of the right internal carotid artery, 60% to 80% stenosis of the left internal carotid artery, and 60% stenosis of the left external carotid artery.
He had a carotid ultrasound , which revealed total occlusion of the right internal carotid artery , 60 % to 80 % stenosis of the left internal carotid artery , and 60 % stenosis of the left external carotid artery .