不论脑动脉血栓形成,栓塞,脑动脉狭窄或痉挛等都使相应局部脑组织的血液灌流量减少,导致脑缺血性损伤,脑代谢及功能障碍。脑缺血性损伤能否恢复,一方面取决于缺血程度及持续时间的长短,另一方面更重要的是与缺血脑组织能否及早恢复血液灌流有关。近年来对一些脑血管疾病患者采用手术治疗(如颈动脉内膜切除术,颅内外动脉搭桥术等),以重建缺血脑组织的血液灌 Regardless of cerebral arterial thrombosis, embolism, cerebral artery stenosis or spasm and so on corresponding local brain tissue to reduce the amount of blood perfusion, leading to cerebral ischemic injury, cerebral metabolism and dysfunction. Is cerebral ischemic injury can be restored, on the one hand, depends on the degree of ischemia and the duration of the duration, on the other hand more important is whether ischemic brain tissue can be related to early recovery of hemoperfusion. In recent years, some patients with cerebrovascular disease by surgical treatment (such as carotid endarterectomy, intracranial artery bypass grafting, etc.) to rebuild ischemic brain tissue of blood