The recanalization of blood vessel was observed and the femoral arteries and veins were excised to investigate the pathologic changes in vascular endothelium and venous valve.

• 方法:人为造成犬后肢股动、静脉血栓,以超声溶栓仪行超声溶栓,观察记录溶栓效果及血管再通情况,股动脉、静脉溶栓后做病理观察,了解管壁及瓣膜情况。