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1、安徽医科大学硕士学位论文68.4%(39/57)indifferentiatingmalignantetiologyofbiliarystricturesandbenigncauses.IntheconventionalunenhancedMRI,13casesofhilarseesofttissuemasssignallesionselongatedT1,mixedT2signal,ninecasesofmasssignalisnotobvious.Seeninthemiddleanddistalbileductthickeni
2、ngofsofttissuenodulesin11cases,theperformanceslightlylongerT1andlongerT2signal,eightcaseswereT1,etc.T2signalorsmaller,difficulttodiscern.Hilarlesionsin20casesoutof22casesDWIsequencepresentsahighsignal,signaluniformityorlessuniform.Middleanddistalbileduct19casesintheDW
3、Isequence14caseslesionsshowedhighsignal.Thegroupof41casesin40casestheVIBEsequenceofmulti-phasedynamicenhancedMRIcoronalreconstructionaredisplayeddirectlylesionenhancementshowedlesionslumenstenosiseccentricwallthickeningormass,transversecircularorsemi-circularthickenin
4、gsignificantlydelayedstrengthen,toenhancedscancoronalreconstructionintuitiveshowedlesions.MRCPcombined(T1WI,T2WI)isedgestatisticallysignificantdifferencebetweenbeforeandafter.MRCP/(T1WI,T2WI)jointtheDWIsequencesbeforeandafterthetwomethodshadstatisticallysignificantres
5、ults.MRCP/(T1WI,T2WI)/DWIjointVIBEdynamiccontrast-enhancedcoronalreconstructionsequencebeforeandafterresultsandthedifferencewasstatisticallysignificant.Conclusion:MRCPmorphologicalpositioningandqualitativediagnosticvalueiscomparablewithERCP.CA-199hasahighreferencevalu
6、e.TheDWIsequenceiseconomic,practical,positioningandqualitativehighreferencevalue.MRCP/(T1WI,T2WI)unitedDWIsequenceisaspreferredsequence.Plainandenhancedscansequencetobecoronallesionenhancementpatternisdisplayeddirectlyshowedlesionssignificantlyimprovetheaccuracyoflesi
7、onlocalizationandqualitative.TheMRCP/(T1WI,T2WI)/DWIUnitedVIBEdynamiccontrast-enhancedcoronalsequenceisselectedmoreoptimizedsequence.Keywords:Cholangiocarcinoma/MRCP/Morphology/MultipleSequence/Value5安徽医科大学硕士学位论文MRCP及不同MRI序列联合应用对胆管癌诊断价值的评价1前言[1]自从上个世纪90年代Wallner等率先应用磁
8、共振胰胆管成像（magneticresonancecholangiopancreatography，MRCP）以来，该技术目前已成为一种简便、安全、无创、无需注射对比剂的胰胆管成像方法，甚至可替代直接法胆道造影成像（ERCP、PTC），它是利用重T
