Among them, cases( %) showed true aneurysm, 8 cases ( %) pseudoaneurysm, and cases (%) superficial congenital arteriovenousaneurysm.
其中真性动脉瘤 例（ ％），假性动脉瘤8例（ ％），浅表先天性动静脉瘤例（％）；
2
Cerebral aneurysm and arteriovenous malformation are frequent disease of cerebral vessels.
脑动脉瘤和脑动静脉畸形是脑血管最常见的疾病。
3
Vascular disorders such as aneurysm, angioma or arteriovenous malformation can be detected and differentiated from intracranial tumors or granuloma based on typical time-density curves;