Imaging with technetium-99m analogs of imminodiacetic acid has been shown to be useful in the diagnosis of various hepatobiliary diseases. The biliary ductal dilatation is usually late response of obstruction. With the development of TC-99m IDA scintigraphy, however, the functional aberrations associated with obstruction can be detected prior to the development of ductal enlargement identifiable by US & CT. We report a case of post-cholecystectomy pain due to biliary dyskinesia diagnosed by 99m TC-HIDA hepatobiliary imaging.