Silent cerebral infarction in the neurologically nondiseased elderlyPurpose: To investigate the frequency of silent cerebral infarction (SCI) in the neurologically nondiseased elderly subjects.

• 第一部分无症状性脑梗死的临床意义1．“健康”老年人中无症状性脑梗死的调查目的：了解无症状性脑梗死(SCI)在老年人中的发生率。