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AcademicJournalofShanghaiSecondMedicalUniversityVol.2No.#Jun.2$$PW2$$#.%&’2(.)$2*(*&*2$$$#($&2($+MRTA112311333120002523MRMRTAEHFS102EHFS70MRTAMRTA83.33%13.22%P0.0183.33%86.78%85.76%Kappa=0.672/EHFSMRTAMRI/,745-12,814-42.ClinicalValueofMRTomographicAngiographyintheDiagnosisofEssentialHemifacialSpasmCHAIWei-min1CHENKe-min1DINGXiao-long2LILei3TANLing1CAOYan1SHENJia-lin3YAOQiu-ying3ZHUZhen-ya31DepartmentofRadiologyRuijinHospitalShanghaiSecondMedicalUniversityShanghai200025China2DepartmentofRadiologyBaogangHospital3DepartmentofRadiologyRenjiHospitalShanghaiSecondMedicalUniversityAbstract)Objective)ToevaluateMRtomographicangiographyMRTAintheclinicaldiagnosisofessentialhemifacialspasmEHFS.)Methods)MRTAofbilateralfacialnerveswasperformedon%$2establishedEHFSpa-tientsand’$asymptomaticvolunteersascontrols.Imagesofthreeplanesincludingtransverseobliquecoronalandcoronalsectionswereobtainedforeachpatient.)Results)Thepositiverateofneurovascularcontact/compressionNVCdetectedbyMRTAinsymptomaticsides*/.//%wassignificantlyhigherthanthatinasymptomaticsides%/.22%P0$.$%.ComprehensiveevaluationbasedonallthreeMRTAplanescouldobtainbettersensitivity*/.//%specificity*#.’*%accuracy*.’#%andcorrespondencewithclinicalsymptomsKappa1$.#’2thananysingleplane.)Conclusion)ThesignsofneurovasculardefinitecontactandcompressiondetectedbyMRTAweredefinitelyrelatedwiththeoccurrenceofEHFS.MultiplanarMRTAmayachieveoptimalcorrespon-dencewithclinicalsymptomsandimprovesensitivityspecificityandaccuracyindetectingNVC.Keywords)facialnerve)hemifacialspasm)neurovascularcontact/compression)magneticresonancetomographicangiography))hemifacialspasmHFSHFS295No.6MRTAessentialhemifacialspasmEHFS/neurovascu-larcontact/compressionNVC1#$rootentry/exitzoneREZNVCREZMRmagneticresonanceto-mographicangiographyMRTAREZNVCEHFSMRTAEHFS%EHFS1&’($((.(%6)66.*%’$#**$6.*$+1&.,1-&$,.&%-’-1.&%MRTA*&MRTA(-11#*)$-.*,+’&.’’1&’’$’MRTAMR%PhilipsT1&-NT1.&T(D-TOF-MRTATR.(-msTE.6ms’&º’-6/-1’’&cm/’&cm1mm$,-º#11&º*-º#)&º1&mm%1’MR%SAS1REZFig1DefinitecontactbetweenrightanteriorinferiorcerebellararteryandREZoffacialnerveAtransversesectionBobliquecoronalsection.2REZFig1CompressionfromleftvertebralarteryandposteriorinferiorcerebellararteryontoREZoffacialnerveAtransversesectionBobliquecoronalsectionNnerveVvascular.MRTAP0.01100%Kappa5MR395Vol.2511MRTATab1ComparisonofvariousMRTAsectionsSectionSensitivity%Specificity%Accuracy%KappaTransverse100.0025.6247.670.170ObliqueCoronal97.0623.1445.060.133Coronal100.0026.0347.970.173Comprehensive100.0023.5546.220.154Suspiciouscontactregardedaspositivity.MRTAP0.01Kappa5MR22MRTATab2ComparisonofvariousMRTAsectionsSectionSensitivity%Specificity%Accuracy%KappaTransverse87.2565.7072.090.442ObliqueCoronal79.4173.5575.290.472Coronal54.9088.4378.490.457Comprehensive83.3386.7885.760.672SuspiciouscontactregardedasnegativityMRTA83.33%85/10213.22%32/242P0.01Kappa5Kappa=0.5816//MR83.33%78NVCEHFS89NVCMR1011MRTAMRTAEHFS611495No.6ProPexProPex3%1%1%12&1’ProPexProPexProPexXProPexX1CusterLE.ExactmethodsoflocatingtheapicalforamenJ.JNatlDentAssoc1(1)’)1’*)1(.2.M.3.1((+.1+2.3Sobaro-NavarroV.Klinischeerprobungdeswurzelkanallängenmess-gerätesapicometerJ.Quintessenz1(),+13-3*13-6.,ShabahangSGoonWYGluskinAH.AninvivoevaluationofrootZXelectronicapexlocatorJ.JEndodon1((611616*61).’ChunnCBZardiackasLDMenkeRA.invivorootcanallengthde-terminationusingtheForameterJ.JEndodon1()1+’-’*’2-.6PlantJJNewmanRF.ClinicalevaluationoftheSono-EplorerJ.JEndodon1(+6221’*216.+O’NeillLJ.Aclinicalevaluationofelectronicrootcanalmeasure-mentJ.OralSurgOralMedOralPathol1(+,3),6(*,+3.)OliverPOliverSThomasA.InfluenceofthecanalcontentsontheelectricalassisteddeterminationofthelengthofrootcanalJ.2--22))3*)’.(MayedaDLSimonJHAimarDFetal.invivomeasurementinvi-talandnecroticcanalswiththeendexapexlocatorJ.JEndodon1((311’,’*’,).1-DunlapCARemeikisNABeGoleEAetal.AninvivoevaluationofanelectronicapexloacatorthatusestheratiomethodinvitalandnecroticcanalsJ.JEndodon1(()1,)*’-.11.J.1()’2-316,.12AshrafFFEricMRKeithVK.Accuracyoftheendexwithvaria-tionsincanalirrigantsandforamensiseJ.JEndodon1((31(63*6+.13RolandWChristophJHeinerG.AninvitrocomparisonoftwomodenapexlocatorsJ.JEndodn1(((2’+6’*+6).1,MearesWASteimanHR.Theinfluenceofsodiumhypochloriteirri-gationontheaccuracyoftherootZXelectronicapexlocatorJ.JEndodon2--22)’(’*’().1’TinazACSevimliLSGorgulGetal.Theeffectsofsodiumhypo-chlorideconcentrationsontheaccuracyofanapexlocatingdeviceJ.JEndodon2--22)16-*162.2--’*-1*21==================================================2--’*-,*-1’(,1JannettaPJAbbasyMMaroonJCetal.Etiologyanddefinitivemicrosurgicaltreatmentofhemifacialspasmoperativetechniquesandresultsin,+patientsJ.JNeurosurg1(++,+321*32).2AugerRGPiepgrasDGLawsER.Hemifacialspasmresultsofmicrovasculardecompressionofthefacialnervein’,patientsJ.MayoClinProc1()6616,-*6,,.3WilkinsRH.HemifacialspasmareviewJ.SurgNeurol1((1362’1*2++.,BarkerIIFGJannettaPJBissonetteDJetal.Microvascularde-compressionforhemifacialspasmJ.JNeurosurg1((’)22-1*21-.’LandisJRKochGG.ThemeasurementofobserveragreementforcategoricaldataJ