Recurrent cerebral infarction in the first 3 months 36.5% (first month: 21.2%); Second cerebral infarction 61.5% and fourth cerebral infarction 13.5%); Atherosclerotic stenosis of two groups 80.77% - 88.46% (ratio of carotid stenosis respectively 44.23% - 48.07%; basal body 40.38% - 46.15%; midbrain M1: 25% - 32.69%; M2: 13.46% - 19.23%; posterior brain: 11.54% - 192%; forebrain: 5.77% - 11.53%.