Disorders of gastric emptying and the application of radionuclide techniques.

There has been a greatly increased understanding of the physiology of gastric emptying in normal subjects, and of the pathophysiology and pharmacological treatment of gastric emptying disorders associated with the development and application of methods to quantify gastric emptying in humans. The non-invasive measurement of gastric emptying by means of radionuclide-labelled food markers has widespread clinical and research applications.