eswan序列对前列腺癌与前列腺增生鉴别诊断的价值

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1、万方数据大连医科大学硕士学位论文ESWANTechniqueintheDifferentialDiagnosisofProstateCancerandProstateHyperplasiaMasterdegreecandidate：TongZibinSupervisor：ProfessorLiuAilianAssociateProfessorSunMeiyuMajor：MedicalimagingandnuclearmedicineAbstractobjeetive：ToexplorethefeasibilityoftheenhancedT2starweighte

2、dangiography(ESWAN)MRIpost—processedmultipleparametersindifferentialdiagnosisofprostatecancer(PCa)andbenignprostatichyperplasia(BPH)．MaterialsandMethods：Inthisretrospectivestudy,56patientswerereviewedinourhospitalbetweenFebruary2012andJanuary2015withpathologicallyconfirmedprostatelesi

3、ons(26prostatecancer，30benignprostatichyperplasia)．AllthepatientsunderwentprostateMRIexamsona3．0Tscarmer(GESignaHDxt，Mikauwee，USA)withpelvic8-channelphased—arrayreceivercoil，andtheprotocolincludingtheconventionalMRI(T1wI，T2WI)，dynamiccontrast—enhancedMRI，diffusion—weightedimagingandES

4、WANMRI．Theimageswerepost-processedusing．FuntoolsoftwareonaGEAW4．4workstation，thenthemagnitude，phaseandR2宰mapsandsignalintensity-time(SI—T1curvewereobtained．TheR2牵andphasevaluesofeachlesionregionwereobtainedwiththere百onofinterestmanuallycircled．Theauthorandaseniorabdominalradiologist，e

5、achunawareofthepathologyresults，reviewedandrecordedallofthesize，thelocationandthesignalintensitiesofallthelesions，andwhethertherewasmetastasis(pelviclymphnodes，pelvicbone)．Theyobservedasfollows：①the4万方数据大连医科大学硕士学位论文characteristicsofTIWI，T2WI，DWl．@thecharacteristicofSI-TcurvesofDCE—MRI

6、．⑨theintratumoralsusceptibilitysignalintensity(ITSS)ofphasemaps(thedotted．1inearlowsignalintensitywhichthediameterofthelesionwasmorethan5mmdefinedashemorrhage，butthelinearlowsignalintensityoncontinuouslevelsdefinedastinyveins)．ForthePCapatients，theROIswereplacedonthesolidpartofthelesi

7、on(choosethelargestonethroughmultiplelesions)，including2／3ofthetumorareabytwoobserverscombinedthesurgicalpathologyresulsandtheMRIimages(hypointenseT2WIsignals，hyperintenseDWIsignals，andsignificantlyenhancedwithDCE—MRI)．ForBPHpatiens，theROIsshouldalsocover2／3ofthelesionregion，andchoose

8、50-70