The non-contrast CT images above demonstrated an incidental finding of dilated common bile duct (yellow outline) in a female with a history of cholecystectomy. Hepatobiliary scan requested to determine duct patency.
4 mCi Tc Choletec was administered intravenously and imaging was completed in the anterior projection for 1 hour. The images demonstrate normal passage of the Tc Choletec through the common bile duct and into the small intestine, demonstrating no blockage in the common bile duct.
Reference image - Gallbladder (green) liver (orange) kidneys (light blue) aorta (red) inferior vena cava (blue)
Reference: Are dilating bile ducts a cause for concern? ML Wilkinson, Gut 1999;45:637-638