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1、多层螺旋CT对婴幼儿先天性感音性耳聋的诊断价值作者：边致强，刘亚群，李笃民，崔凤玉作者单位：山东大学齐鲁医院影像中心，济南250012【摘要】冃的探讨多层螺旋CT（multislicecomputedtomography,MSCT）对婴幼儿先天性感音性耳聋（sensorineuralhearingloss,SNHL）的诊断价值。方法对74例婴幼儿SNHL患者采用颖骨轴位高分辨率MSCT扫描及多平面重建（MPR）,对感兴趣内耳用容积再现技术（VRT）进行重建。结果63例语前聋组患者中42例（84耳）双侧内耳MSCT表现无明显异常;21例（42耳）显示内耳骨迷路畸形（其中2
2、9耳多种畸形共存）：耳蜗间隔发育不全I型1例（2耳），耳蜗间隔发育不全II型（Mondini畸形）4例（8耳），前庭■外半规管畸形12例（24耳），前庭导水管扩大13例（26耳）;内耳道畸形3例（3耳）;外耳道未发育1例（1耳）;其中37耳MSCT横断面图像和MPR,VRT图像均可清晰显示畸形的部位和程度，5耳Mondini型畸形患者VRT图像较MSCT横断面图像更能清晰的显示畸形部位;7例（12耳）分泌性中耳炎。11例语后聋组中显示8例（16耳）内耳结构基本正常,3例（6耳）为大前庭水管综合征，3例（6耳）分泌性中耳炎。结论MSCT结合MPR及VRT可更加准确的对内耳
3、骨迷路畸形的程度和部位做出诊断，是对婴幼儿SNHL病因诊断重要的一种检查方法。【关键词】感音性耳聋;X线计算机；颖骨;三维;婴幼儿BIANZhiqiang,LIUYaqun,LIDumin,CUIFengyuImagingCenter,QiluHospitalofShandongUniversity,Jinan250012,ChinaAbstract：ObjectiveTodiscussthevalueofmultislicecomputedtomographyimaging(MSCT)ininfantswithcongenitalsensorineuralhearin
4、gloss(SNHL).Methods74infantswithSNHLweresubjectedtoMSCT.AxialhighresolutionMSCTscanandMPRreconstructionwereperformedoninallpatients.The3Dreconstructionswereperformedwiththevolumerenderingtechniqueontheworkstation.Results42patients(84ears)werenormaland21patients(42ears)hadcongenitalinnere
5、armalformations(ofwhich29earswereaccompaniedbyothermalformations).Ofthe63patientswithprespeechdeafness,1patient(2ears)hadincompletepartitiontypeIdeafness,4(8ears)hadincompletepartitiontypeII,12(24ears)hadvestibulelateralsemicircularcanaldysplasia,13(26ears)hadalargevestibularaqueduct,3(3
6、ears)hadinternalauditorycanalabnormality,and1(1ear)hadbonyexternalauditorycanalabsence・Ofthemalformations,alltheaxial,MPRandVRTimagescoulddisplaythesiteanddegreein37ears.VRTimagesweresuperiortotheaxialimagesindisplayingthemalformationsin5earswithMondinimalformationand12earswithsecretoryo
7、titismedia.Ofthe11patientswithpostspeechdeafness,8patients(16ears)wereprovedtobenormal,and3patients(6ears)hadlargevestibularaqueductsyndrome,3patients(6ears)hadsecretoryotitismedia.ConclusionMSCTallowsacomprehensiveassessmentofvariouscongenitalearmalformationsbyhighqualit
