Among them, cases( %) showed true aneurysm, 8 cases ( %) pseudoaneurysm, and cases (%) superficial congenital arteriovenous aneurysm.

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（％）；

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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。

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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;

依据时间-密度曲线，确诊血管性病变如动脉瘤、血管瘤或血管畸形，并将它们与颅内肿瘤鉴别。

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