Gallbladder visualization after hepatic washout.

Washout of hepatic activity on hepatobiliary scintigraphy has been used as a rationale to stop imaging during evaluation for acute cholecystitis. A case is presented that shows gallbladder visualization after the liver has washed out on analog images. The need for strict application of delayed imaging at hepatobiliary scintigraphy for acute cholecystitis is reemphasized.