Cholangiopancreatography, Endoscopic RetrogradeCholangiopancreatography, Magnetic ResonanceMagnetic Resonance ImagingTomography, X-Ray ComputedCholedocholithiasisMagnetic Resonance SpectroscopySphincterotomy, EndoscopicPancreatitisBiliary Tract DiseasesPancreatic DuctsHyperamylasemiaCommon Bile DuctCommon Bile Duct DiseasesGallstonesCholangitisPancreatic DiseasesBile Duct DiseasesCholangiographyJaundice, ObstructiveCholecystectomy, LaparoscopicBiliary FistulaMagnetic Resonance AngiographySphincter of Oddi DysfunctionAmpulla of VaterTomographyCholestasisPositron-Emission TomographyEndosonographyCholedochal CystCholestasis, ExtrahepaticSphincter of OddiCholelithiasisCholedochostomyMagnetic Resonance Imaging, CineBile DuctsContrast MediaCholecystectomyGabexateDrainagePostcholecystectomy SyndromeTomography, Optical CoherenceCystic DuctEndoscopes, GastrointestinalCommon Bile Duct NeoplasmsRetrospective StudiesTomography, Emission-ComputedTreatment OutcomeGallbladder DiseasesDouble-Balloon EnteroscopySensitivity and SpecificityImaging, Three-DimensionalBiliary TractBile Duct NeoplasmsEndoscopyConstriction, PathologicPancreatitis, ChronicPancreatic NeoplasmsBrainHepatic Duct, CommonMirizzi SyndromeTomography, Spiral ComputedGastroenterologyPancreasPancreatic PseudocystReproducibility of ResultsJaundiceAmylasesCatheterizationImage Processing, Computer-AssistedTomography, OpticalDiffusion Magnetic Resonance ImagingPredictive Value of TestsAnastomosis, Roux-en-YTomography, Emission-Computed, Single-PhotonLithiasisBile Ducts, IntrahepaticProspective StudiesGadolinium DTPAMultidetector Computed TomographyGallbladder NeoplasmsBiliary Tract Surgical ProceduresDuodenal DiseasesEndoscopy, Digestive SystemBiliary Tract NeoplasmsCholangiocarcinomaDiagnostic ImagingAdenomyomaAcute DiseaseCalculiJejunostomyTechnetium Tc 99m LidofeninGadoliniumBrain MappingEndoscopesBreath HoldingNuclear Magnetic Resonance, BiomolecularBiliary DyskinesiaAbdominal PainDuodenoscopyTime Factors