Cerebrovascular pathologies due to atherosclerosis are the most common cause of morbidity and cardiovascular diseases and the 3rd widely known cause of mortality after cancer (Silvennoinen HM ,2007). Cerebrovascular pathologies are responsible for 95% of stroke, and ischemic stroke is the cause of approximately 80% of stroke cases due to cerebrovascular pathologies. Cardiac thromboembolism is responsible for only 1/5 of transient or permanent cerebral ischemia, and 4/5 is due to atherosclerosis (Landewehr P ,1995). It is stated in the literature that extracranial carotid artery atherosclerosis ranks third among the causes of ischemic stroke. (Ooi Y.C, 2015). Present knowledge base indications for the solving of carotid artery stenosis on the presence of detectable symptoms and the degree of percentage (%CS) of carotid artery stenosis (Hobson RW 2nd, 2008). Therefore, in order to plan the treatment that will provide the most benefit to the patient, it is of great importance to determine the pathology correctly and to measure the degree of stenosis correctly. In the previous European Carotid Surgery Study (ECST) and North American Symptomatic Carotid Endarterectomy Studies (NASCET), carotid endarterectomy (CEA) has been reported to be beneficial in patients who are symptomatic and have stenosis between 70% and 99%. (European Carotid Surgery Trial,1991, North American Symptomatic Carotid Endarterectomy Trial Collaborators.1991).