无症状性脑梗塞按美国1990年脑血管病新的分类标准被列为第一种脑血管损害。但迄今为止尚无确定的诊断标准,一般认为高龄者见到了与病变及神经系统体征无关的CT及MRI上的梗塞灶,即为无症状性脑梗塞(silent brain infarction,SBI或asymptomatic cerebral infarction,ACI)。一侧有神经系统体征,在与症状无关的部位也检出了梗塞灶,此灶亦属SBI。 Asymptomatic cerebral infarction by the United States in 1990 the new classification criteria for cerebrovascular disease was classified as the first type of cerebral vascular damage. However, to date, there is no definitive diagnostic criteria. Elderly persons are generally considered to have seen CT and MRI infarcts irrelevant to pathological and neurological signs, namely silent brain infarction (SBI or asymptomatic cerebral infarction, ACI). There is a neurological sign on one side, and an infarct is also detected at a site unrelated to the symptoms. This is also SBI.