Objective Taking the radionuclide as criteria to study the reliability of the method assessing gastric emptying via measuring the cross - sectional area of the middle gastric antrum by ultrasonography, diagnostic DGP and simplify the method.

• 目的以放射性核素法为标准，研究超声胃窦中点面积法测胃排空功能的可靠性，应用于糖尿病胃病（DGP）的诊断，及对方法进行简化。