摘要
目的：提出胼胝体发育不全的ＣＴ诊断要点。材料与方法：分析２５例儿童胼胝体发育不全的临床及ＣＴ表现，并从组织胚胎学角度加以解释。结果：胼胝体发育不全的ＣＴ诊断要点为：（１）半球间裂异常靠近第三脑室前部（正常儿童半球间裂长度与第三脑室前部至半球间裂近端距离之比为０．３４～３．１４，当此值大于４时，则具有意义）；（２）侧脑室前角平直、分离；（３）室间孔分离；（４）侧脑室体部平行或侧脑室体部脉络丛间夹角小于４５°；（５）第三脑室扩大、上移；（６）枕角扩大。其中最重要的征象是第一条。结论：胼胝体发育不全的ＣＴ表现具有特征性，ＣＴ能够作出正确的诊断。
Purpose:ToproposeCTdiagnosticcriteriaofdysplasiaofcorpuscalosum.MaterialsandMethods:TheCTfindingsandclinicalsymptomsin25pediatriccaseswithdysplasiaofcorpuscalosumwereanalysed,anddiscussedonembryologicalbasis.Results:TheCTdiagnosticcriteriaofdysplasiaofcorpuscalosumwere:(1)abnormalproximityofinterhemisphericfissuretotheanteriorpartofthethirdventricle(inchildrentheratioofthelengthofinterhemisphericfissuretothedis-tancebetweenanteriorpartofthethirdventricleandinterhemisphericfisurewas0.34to3.14,ara-tioover4wassignificance).(2)flatenedstraightenedandseparatedfrontalhorns.(3)separatedin-terventricularforamina.(4)nearlyparalelbodiesoflateralventriclesordecreasedanglebetweenthechoroidplexusoftheventricles.(5)dilatationandelevationofthethirdventricle.(6)enlargedoc-cipitalhorns.Amongthem,themostimportantsignwasthefirstone.Conclusion:CorrectdiagnosisofdysplasiaofcorpuscalosumcouldbemadeonthebasisofCTcharacteristics.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
1996年第2期94-97,共4页
Chinese Journal of Radiology
关键词
胼低体
发育不全
CT
诊断
儿童
CorpuscalosumAbnormalitiesTomography,X-raycomputed
