Biliary imaging: a review1 1Abbreviations used in this paper: CBDS, common bile duct stone; CT, computed tomography; ERC, endoscopic retrograde cholangiography; ERCP, endoscopic retrograde cholangiopancreatography; EUS, endoscopic ultrasound; IOC, intraoperative cholangiography; LC, laparoscopic cholecystectomy; LFT, liver function test; MRC, magnetic resonance cholangiography; MRCP, magnetic resonance cholangiopancreatography; MRI, magnetic resonance imaging; PBD, percutaneous biliary drainage; PEP, post-ERCP pancreatitis; PET, positron emission tomography; PSC, primary sclerosing cholangitis; PTC, percutaneous transhepatic cholangiography; SOD, sphincter of Oddi dysfunction; SOM, sphincter of Oddi manometry; TUS, transcutaneous ultrasound.