Methods Eighteen Jersey rabbits were divided randomly into three goups,SAH group,operation control group and normal sodium control group.

• 方法取新西兰大白兔18只,随机分成SAH组、手术对照组、生理盐水组3组,每组6只,每组分别于手术后第3、7、14d行DSA(脑血管造影)、TCD(经颅多普勒超声)、组织学检查。