Tomography of the gallbladder in oral cholecystography.

Tomography was used to supplement 327 oral cholecystograms in which the findings, including nonvisualized gallbladder, were inconclusive. In 136 cases, operative and tomographic findings were correlated. In 286 cases (87%), tomography provided conclusive diagnostic information. A diagnosis was possible in 108 of 111 cases in which the gallbladder had been visualized on conventional films and in 179 of 216 cases in which the gallbladder had not been visualized. Tomography of the gallbladder is an easily accomplished procedure that usually adds enough information to the inconclusive cholecystogram to permit accurate diagnosis and eliminate the need for reexamination.