急性脑血管病为我国死因之冠,且因发病急骤往往先就诊于急诊室。临床工作中脑出血与动脉粥样硬化性血栓形成脑梗塞(下称脑梗塞)的某些病例之鉴别有时甚为困难,直接影响治疗正确地进行。腰穿虽为鉴别诊断的重要手段,但有时因颅内压增高而列为相对禁忌,CT近年来对于二者的鉴别起 Acute cerebrovascular disease is the highest cause of death in our country, and often due to sudden onset of emergency treatment in the emergency room. In clinical work, the identification of some cases of cerebral hemorrhage and atherothrombotic cerebral infarction (hereinafter referred to as cerebral infarction) is sometimes very difficult and directly affects the correct treatment. Although the lumbar puncture is an important means of differential diagnosis, but sometimes due to increased intracranial pressure as a relative contraindication, CT in recent years for the identification of the two