文档介绍：AdvancesofIDUSinDiagnosisfor BilliaryDiseasesXiaopingZouDepartmentofGastroenterologyNanjingDrumTowerHospitalNanjingUniversitySchoolofMedicineNanjing,ChinaIntra-ductalUltrasonography,IDUSAdvantagesofIDUSWithafinerprobe,-billiaryductfacilitatetheacousticalcouplingFluidinductcanbeusedasmediumofultrasoundThediameteroftheductisslightlylargerthanthantoftheprobeHigherfrequency(12-30MHz)ircularscanSynchronizeddoublesectionscanMechanicalradialscanImagesofnormalbilliaryduct2-3layersThickness:-:hyper-echogenicity,representstheinterphaseSecondlayer:hypo-echogenicity,representsmucosalandmuscularisproprialayersOuterlayer:hyper-echogenicity,eoplasmsLocalizationofneuro-umorsnotdetctedbyEUSSuspectedstoneinCBDCBDstonesN=35(withsuspectedstones)Of21patientswithstonesnotdetectedbyERCP,IDUSidentified8,inwhich7wereprovedbyESTOf5patientswithsuspectedstonesunderERCP,IDUSidentifiedthemasbubblesIDUSchangedtheclinicalstrategiesin13(37%)patientsCatanzaro,A,Pfau,P,Isenberg,GA,Wong,;57:=62Detectrateofcholangiography:87%binedwithcholangiography:97%IDUSincholangiocarcinomaanddifferentiationbetweenbenignandmalignantstricture