The patient is a 56-year-old female with a history of small bowel resection for gunshot wound now presenting with epigastric and right upper quadrant abdominal pain. The patient is referred for evaluation of cholecystitis.

Normal tracer activity was seen throughout the liver. At approximately 5 minutes post injection of tracer, there was visible activity in the proximal-most portion of the biliary tree. Small bowel activity was noted at approximately 12 minutes post injection of tracer. The gallbladder was not visualized during the first one hour scanning period and 6.5 hour delayed image.

Nonvisualization of the gallbladder, consistent with cholecystitis.