作者从1987至1990年用201个钴源的γ刀治疗227例经血管造影证实的脑动静脉畸形(AVM)患者,男113例,女114例,平均年龄33岁,其中36例属于儿科范畴(2～18岁)。本组患者多数系不宜显微手术切除者而用放射外科治疗。本组227例AVM部位以深部(丘脑,基底节,胼胝体)较多,占25%;后颅窝占16%。按Spetzler 与Martin 分级,仅8例(3.5%)为Ⅰ级(小,表浅与非要害部位);Ⅱ级 The authors treated 227 AVC patients with angiographic evidence of arterial and venous malformation (AVM) from 1987 to 1990 with a total of 201 cobalt sources, 113 men and 114 women, with a mean age of 33 years, of whom 36 were pediatric (2 to 18 years old). Most of the patients in this group should not be microsurgical resection with radiosurgery. The group of 227 cases of AVM deep (thalamus, basal ganglia, corpus callosum) more, accounting for 25%; posterior fossa accounted for 16%. According to Spetzler and Martin classification, only 8 cases (3.5%) were grade Ⅰ (small, superficial and non-critical sites); Ⅱ