What happens during a gallbladder ultrasound?
The gallbladder stores bile, produced by the liver. Common problems with the gallbladder include inflammation or gallstones, which generally form from the bile being saturated with cholesterol or bilirubin. The removal of a gallbladder, a cholecystectomy, may be performed if the patient suffers from recurrent gallstones.
Sources: radassociates.com, wikipedia.org