AIM: To explore the acoustic imaging window and ultrasonic examination method of gastroduodenal artery (GDA) and common heptic artery (CHA) and to observe the effect of food ingestion on blood flow dynamics of GDA and CHA.

• 目的 :初步评估超声检测胃十二指肠动脉 (GDA )、肝总动脉 (CHA )的显示率与正常值范围 ,观察进食前后GDA、CHA血流参数的变化。