Cholescintigraphic observation of the sphincter of Oddi motor activity in patients with gallstone.

In 36 cases with gallstones, biliary scintigraphy was performed before and after operation to prepare the time-activity curve in the juxta-papillary duodenum. This curve showed different patterns depending on the conditions of disease, and seemed to represent on aspect of the sphincter of Oddi phasic activity, in view of the exerted effect of caerulein administration. This method is useful as a non-invasive one for the diagnosis of dynamic function of the sphincter of Oddi.