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1、2012年12月第9卷第34期·影像与介入·多层螺旋CT血管成像在颅内动脉瘤诊断中的价值张文洪1陈文华2邢伟2王祁21.江苏省江阴市中医院南京中医药大学江阴附属医院放射科,江苏江阴214400;2.苏州大学附属第三医院放射科,江苏常州213003[摘要]目的通过与三维数字血管减影(DSA)对比,评价64层螺旋CT血管成像(CTA)对颅内动脉瘤尤其是<3mm动脉瘤的诊断价值。方法选择怀疑有颅内动脉瘤的310例患者纳入研究,所有患者均行64层螺旋CTA和DSA检查。64层螺旋CTA技术参数:120kV、250mAs、准直0.
2、75mm、重建层厚0.75mm和间隔0.4mm。结果三维DSA作为诊断标准,在310例患者中,220例发现264个动脉瘤。CTA漏诊4个动脉瘤,7个动脉瘤在常规DSA检查中漏诊,但被64层螺旋CTA诊断,均得到三维DSA的证实。64层螺旋CTA诊断<3mm颅内动脉瘤的敏感性、特异性和准确性分别是94.0%、100.0%和97.9%。结论64层螺旋CTA对于颅内动脉瘤包括<3mm动脉瘤是一种准确的影像学检查方法,可以作为颅内动脉瘤诊断的首选影像检查。[关键词]颅内动脉瘤;CT血管造影术;数字减影血管造影;诊断[中图分类号]
3、R739.41[文献标识码]A[文章编号]1673-7210(2012)12(a)-0091-04ValueofmultisliceCTangiographyindiagnosisofintracranialaneurysms1222ZHANGWenhongCHENWenhuaXINGWeiWANGQi1.DepartmentofRadiology,HospitalofTraditionalChineseMedicineinJiangyinCityJiangyinAffiliatedHospitalofNan-jingU
4、niversityofChineseMedicine,JiangsuProvince,Jiangyin214400,China;2.DepartmentofRadiology,theThirdAffiliatedHospitalofSuzhouUniversity,JiangsuProvince,Changzhou213003,China[Abstract]ObjectiveToassessthediagnosticvalueof64-rowmultisliceCTangiography(CTA)forintracran
5、iala-neurysms,especiallysmallaneurysms(<3mm)bycomparingwiththree-dimensionaldigitalsubtractionangiography(DSA).MethodsAtotalof310patientssuspectedintracranialaneurysmwereincludedinthisstudyandsuccessivelyun-derwent64-sliceCTAandDSAexamination.The64-sliceCTAdataac
6、quisitionandreconstructionparameterswereper-formedaccordingtothefollowingprotocol:120kV,250mAs,collimation0.75mm,postprocessingreconstruction0.75mmandinterval0.4mm.ResultsThree-dimensionalDSAwasconsideredasthegoldstandard,andamong310casesofpa-tients,264aneurysmsw
7、eredetectedfrom220patients.4aneurysmsweremissedwhenbyCTAdetection.7aneurysmswerenotclearlydisplayedatconventionalDSA,butdiagnosedby64-sliceCTA,andallmissedaneurysmswereprovedbythree-dimensionalDSA.Thesensitivity,specificity,andaccuracyof64-sliceCTAindetectingless
8、than3mmaneurysmswere94.0%,100.0%and97.9%respectively.Conclusion64-sliceCTAisanaccurateimagingexaminationforintracra-nialaneurysmsdetectionincludinglessthan3mma