胎儿下颌畸形的产前超声诊断分析

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1、中国医学影像学杂志ChineseJournalofMedica1Imaging。478。超声医学UltrasoundImagingDoi：10．3969／j．issn．1005—5185．2010．05．019【摘要】目的：探讨胎儿下颌畸形的产前超声表现、检查技巧及临床意义，提高此类畸形的产前检出率。材料和方法：对我院常规产前筛查或在外院超声检查发现其他异常来我科会诊的胎儿颜面部进行常规多切面扫查。先通过二维超声正中矢状切面主观目测有否下颌发育畸形，同时对可疑病例进行颜面部的冠状面及横切面补充扫查，仔细测量下颌骨前后径，并与双

2、顶径进行比较，然后启动三维表面重建成像协助明确产前诊断。所有经产前超声诊断的病例均经引产后证实。结果：产前共检出下颌发育畸形胎儿11例，其中小下颌畸形9例，下颌骨缺失2例。结论：产前二维超声可以明确诊断胎儿下颌发育畸形，正中矢状切面是诊断此类畸形的首选切面；颜面部三维表面成像具有空间立体显像优势，可全面、直观地再现颜面结构的外形及细部缺陷，是提高胎儿颜面畸形诊断准确度的有效辅助手段。【关键词】超声检查，产前；颌畸形；胎儿[Abstract]PurpleThisstudyistryingtodiscusstheprenatalu

3、ltrasoundfeatures，in—spectiontechniquesandclinicvalueofjawdeformity，andtoimprovetheprenataldetectionrateofsuchdeformities．MaterialsandMethodsCasessuspectedfetaljawdeformitieswerescannedwithroutinemulti-facetsoffacialscanningsuchastransverse，coronalandsagittalsection

4、sduringprenatalultrasonography．Firstly，asubjectivevisualofjawdeformitieswascarriesoutbyamediansagittalsectionsoftwo-dimensionalultrasound，andthenacoronalandcross-sectionscanningwereaddedonsuspectedpatients．Thediameterofmandibularanteroposteriorandbilparietalweremeas

5、uredandcompared．Moreover，athree-dimensionalsurfacereconstructionimngingwasbuiltforprenataldiagnosis．Allcasesdiagnosedbypre—natalultrasoundwereconfirmedbytheinductionoflabor．Resultsi1caseshadletalgnathiamalformation，ofwhich9caseshadmicrognathiaandother2caseshadmandib

6、ulardeficiency．ConclusionsPrenatalfetaltWO-dimensionalultrasoundcarldetectgnathiamal—formationclearly．Midlinesagittalsectionisthefirstchoiceindiagnosingsuchdeformities．Facialthree-dimensionalsurfaceimaginghasanadvantageofaspatialthree-dimensionalim—agingdelete，which

7、canreproducethefacialshapeanddetectthedetaildefectscomprehen—sivelyandintuitively，SOitisaneffectivesupplementarymethodtoimprovethediagnosticaccuracyoffetalfacialmalformations．[KeyWords]ultrasonography，prenatal；jawabnormalities；fetus胎儿下颌畸形主要表现为下颌短小或无下颌，是～43岁，首次超声诊断时孕

8、周为18～4O周。染色体异常综合征的多发畸形之一。郑州市妇幼保1．2仪器与方法采用美国GE公司的Voluson健院于2005—10~2009—12产前检查中共检出1l例下730及VolusonE8彩色多普勒超声诊断仪，经腹扫查颌畸形，现将产前超声特征及诊断技巧报道如下。三维容