Objective To investigate the relation between plasma matrix metalloproteinase 9 (MMP 9) levels and transcranial Doppler (TCD) detected microemboli in patients with cerebral infarction and evaluate the clinical significance.

• 目的 探讨脑梗死患者血浆基质金属蛋白酶 9(MMP 9)水平与经颅多普勒超声 (TCD)微栓子检测结果的关系及其临床意义。