57 cases had been diagnosed,29 cases were aneurysms,16 cases were arteriovenous malformation,6 cases were CCF,and 2 cases were intracranial artery stenosis.

• 共确诊57例,其中脑动脉瘤29例,脑动静脉畸形16例,CCF 6例,烟雾病4例,血管狭窄2例。