对首发卒中患者的CT检查,文献报道无症状梗塞(SI)发生率为10％～38％。关于SI的危险因素尚存有争议。尽管SI不引起明确的症状,但可引起或加剧认知和智力障碍。Desemend等人最近报道,即使未发生卒中的人,如有卒中危险因素存在,其认知功能也常受到损害。因此,有理由认为急性卒中患者如有1个或多个SI,则可影响卒中的康复。但是, CT examination of patients with first stroke, reported in the literature asymptomatic infarction (SI) incidence of 10% to 38%. The risk factors for SI remain controversial. Although SI does not cause specific symptoms, it can cause or exacerbate cognitive and mental retardation. Desemend et al. Recently reported that even in the absence of stroke, cognitive function is often impaired in the presence of risk factors for stroke. Therefore, it is reasonable to assume that the presence of one or more SI in an acute stroke patient can affect stroke recovery. but,