大脑动脉环破裂多见于先天性脑动脉瘤、脑血管畸形或钝性暴力的打击，头撞头致大脑动脉环破裂未见报告，作者在工作中遇到一例，特报告如下。死者柳X，男性，28岁，农民，平素体健。1994年11月5日下午3时，柳X看到本村骆X在帮外地人收购桔子，就到箩筐内拿格子吃，遭到骆的指责 Cerebral arterial ring rupture more common in congenital cerebral aneurysm, cerebrovascular malformation or blunt violence blow, head hit the head caused by cerebral artery ring rupture has not been reported, the author encountered a case of work, special report is as follows. The dead Willow X, male, 28 years old, farmer, usually physical health. At 5:00 on November 5, 1994, Liu X saw the village Luo X in the help of outsiders to buy oranges, to grab the basket inside the basket to eat, was accused Luo