Pupose:The aim of these study was to develop a real-time ultrosonography for assessing gastric emptying of liquid in human and to apply these stansdards to identify non-ulcer dyspepsia (NUD) people.

• 目的：建立一种实时超声标准以评价人体胃液体排空情况的方法，并采用这些标准去诊断非溃疡性消化不良(NUD)患者。