How did you determine your artery was 100% blocked? Which artery is it and is it blocked due to plaque or dissection? I have a 100% blockage of the left internal carotid due to a dissection and have not had a stroke. I am investigating options and it currently appears that the only "cure" is a superficial temporal to middle cerebral artery anastomosis, which would only be performed if a stroke was impending. There are a number of websites that explain blood flow to the brain, including Wikipedia. Best of luck.
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