intracranial atherosclerosis disease. artery narrowed by plaque and normal artery. stroke or cerebrovascular accident or

intracranial atherosclerosis disease artery narrowed plaque normal atherosclerotic stroke cerebrovascular brain attack therapy infographic embolism diagram blocked thrombosis ischemic hypertension thrombus hemorrhagic structure cerebral vascular arterial science aneurysm aortic illustration medicine organ medical vessel system anatomy human blood cholesterol internal carotid