先天性外中耳畸形的高分辨率CT表现.pdf

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1、·影像与介入·20l3年6月第1O卷第l7期先天性外中耳畸形的高分辨率CT表现刘广保聂玉霞谭子琨海南省三亚市中医院介入医学影像科．海南三亚572000【摘要】目的探讨不同类型的先天性外中耳畸形的高分辨率CT(HRCT)的诊断价值。方法收集诊断为先天性外中耳畸形患者40例的影像学资料进行回顾性研究，所有患者均行HRCT扫描，骨算法成像。结果在本研究的40例先天性外中耳畸形患者中，单纯外耳畸形13例，其中副耳1例，副耳合并外耳道狭窄1例，外耳道狭窄3例，外耳道骨性闭锁5例，外耳道膜性闭锁3例，单纯中耳畸形8例，外耳并中耳

2、畸形17例，外耳、中耳及内耳混合畸形2例。结论外耳畸形及中耳畸形单侧发病常见，外耳、中耳畸形常同时发生。外耳畸形中先天性外耳道闭锁常见，中耳畸形以听骨链异常常见。HRCT对骨质结构显示清晰，能够观察外耳、中耳畸形。【关键词】先天性耳畸形；x线计算机；高分辨率cT；颞骨【中图分类号】R764．7【文献标识码】Bf文章编号】1673—7210(2013)06(b)一0104—03High-resolutioncomputerizedtomographyappearancesofcongenitalmalformation

3、softheexternalandmiddleearLIUGuangbaoNIEYuxiaTANZikunDepartmentofInvolvedinMedicalImaging，SanyaHospitalofTraditionalChineseMedicine，HmnanProvince，Sanya572000，China[Abstract]ObjectiveToevaluatethevalueofclinicalapplicationofhigh-resolutioncomputerizedtomography(

4、HRCT)inthediagnoseofcongenitalmalformationsoftheexternalandmiddleear．MethodsTheimagingdataof40congenitalmalformationsoftheexternalandmiddleearpatientswithHRCTwerecollectedandanalyzedretrospec．tively．AllthetemporalboneswerescannedwithHRCT．Allimagesweretargetedus

5、inghigh—bone—detailalgorithms．Results13casesofexternalearabnormalitieswerefound，including1caseofaccessoryauricle，1caseofaccessorywithstenosisofexternalacousticmeatus，3casesofstenosisofexternalacousticmeatus，5casesofexternaiauditorycanalbonyatresiaand3casesofext

6、ernalauditoercanalatresiafilm，8casesofmiddleearabnormalities，17casesofexternalandmiddleearmalformation，2casesofexternal，middleandinnerearmalformation．ConclusionExternalearmalformationandmiddleearmalformationareusuallyunilateral，whileenlargementofvestibularaqued

7、uctisbi-latera1．Congenitalatresiaofexternalacousticmeatusisthemostcommontypeintheexternalearmalformation．HRCTcanprovideclearimagesoftemporalboneandauditoryossicles，whichhelpUSdiagnosethemalformationsofexternalear，middleearandosseouslabyrinth．[Keywords]Congenita

8、learmalformation；X-raycomputer；HRCT；Temporalbone新生儿先天性外中耳畸形是导致先天性耳聋的重要kV，140～160mA，窗宽4000，窗位7000，骨算法重建，矩阵原因．先天性外中耳畸形常导致传导性耳聋，而外中耳畸512x512。形类型多而复杂，由于外耳、中耳大部为骨质结构，颞骨本2结果身具有天然骨