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1、中國醫(yī)學影像學雜志ChineseJournalofMedica1Imaging。478。超聲醫(yī)學UltrasoundImagingDoi：10．3969／j．issn．1005—5185．2010．05．019【摘要】目的：探討胎兒下頜畸形的產(chǎn)前超聲表現(xiàn)、檢查技巧及臨床意義，提高此類畸形的產(chǎn)前檢出率。材料和方法：對我院常規(guī)產(chǎn)前篩查或在外院超聲檢查發(fā)現(xiàn)其他異常來我科會診的胎兒顏面部進行常規(guī)多切面掃查。先通過二維超聲正中矢狀切面主觀目測有否下頜發(fā)育畸形，同時對可疑病例進行顏面部的冠狀面及橫切面補充掃查，仔細測量下頜骨前后徑，并與雙
2、頂徑進行比較，然后啟動三維表面重建成像協(xié)助明確產(chǎn)前診斷。所有經(jīng)產(chǎn)前超聲診斷的病例均經(jīng)引產(chǎn)后證實。結(jié)果：產(chǎn)前共檢出下頜發(fā)育畸形胎兒11例，其中小下頜畸形9例，下頜骨缺失2例。結(jié)論：產(chǎn)前二維超聲可以明確診斷胎兒下頜發(fā)育畸形，正中矢狀切面是診斷此類畸形的首選切面；顏面部三維表面成像具有空間立體顯像優(yōu)勢，可全面、直觀地再現(xiàn)顏面結(jié)構(gòu)的外形及細部缺陷，是提高胎兒顏面畸形診斷準確度的有效輔助手段?！娟P(guān)鍵詞】超聲檢查，產(chǎn)前；頜畸形；胎兒[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胎兒下頜畸形主要表現(xiàn)為下頜短小或無下頜，是～43歲，首次超聲診斷時孕
8、周為18～4O周。染色體異常綜合征的多發(fā)畸形之一。鄭州市婦幼保1．2儀器與方法采用美國GE公司的Voluson健院于2005—10~2009—12產(chǎn)前檢查中共檢出1l例下730及VolusonE8彩色多普勒超聲診斷儀，經(jīng)腹掃查頜畸形，現(xiàn)將產(chǎn)前超聲特征及診斷技巧報道如下。三維容
