Just putting up a new post for future reference, and my interest being I'm having it done in a few days, but I haven't seen many posts about it. With my limited knowldege, a carotid artery occlusion test, similar to an angiogram, tests strength, performance, potential failure of the carotid artery for a number of reasons, one being before a resection of the failed one or another reason like cancer involvement. The carotid resection has several different types too. My reason to have it done is so more radiation can be given being my carotid is past it's toxicity level, will be more compromised from radiation othwise, and then if resected, more radiation can be delivered safely.