卒中是人类三大致命疾病之一。在我国其死亡率仅次于恶性肿瘤 ,排名第二 ,每年约为 15 6/10万人口。在一些大城市则高居首位。全国现有 5 0 0万卒中生存者 ,75 %以上有不同程度的残疾。美国有 4 4 0万卒中的生存者。各国的卒中发病率逐年增高 ,发病年龄不断提前。随着影像学技 Stroke is one of the three most deadly diseases in humans. In our country, its mortality rate is second only to malignant tumors, ranking the second with an annual population of about 15 6/10 million. In some big cities are top. There are over 5 million stroke survivors in the country, and over 75% have varying degrees of disability. There are 44 million stroke survivors in the United States. The incidence of stroke in various countries is increasing year by year, and the age of onset continues to advance. With the imaging skills