Objective To study the change of thyroid function in the depressed patients after acute cerebral infarction.Methods 89 patients with acute cerebral infarction were divided into two groups:those with depression(n=36) and those without depression(n=53).Thyroid function (FT_3,FT_4,TSH) was tested by chemiluminescence method on the seventh day respectively after stroke and compared with normal control group.Results FT_3 was significantly decreased in the two groups compared with control group.FT_4 was signif...