简介：摘要目的比较１２８层与６４０层CTA诊断冠状动脉支架内腔再狭窄不同价值,以期寻找最佳的方法,提高诊断准确率.方法选取２０１０年５月－２０１３年５月１８０例冠状动脉支架植入患者为研究对象,分成２组,每组均为９０例,分别予１２８层和６４０层CTA检查,观察图像质量和支架内腔显示率,然后以选择性冠状动脉造影术为金标准,比较两者的敏感性、特异性和准确度.结果两者在０分、０．５分、１分、１．５分、２分、２．５分、３分发生率上比较差异有统计学意义(p＜０．０５).１２８层CTA和６４０层CTA和选择性冠状动脉造影术比较差异有统计学意义(p＜０．０５);在狭窄程度上比较差异均无统计学意义(p＞０．０５).结论１２８层CTA较６４０层CTA诊断冠状动脉支架内腔再狭窄更加显著,在诊断中意义更大.关键词１２８层CTA;６４０层CTA;冠状动脉支架;内腔再狭窄Clinicalcomparativestudyof１２８layersand６４０layersCTAdiagnosisofcoronaryarterystentrestenosislumenAbstractObjectiveTocomparethe１２８leveland６４０levelCTAdiagnosisofcoronaryarterystentrestenosislumendifferentvaluesinordertofindthebestmethodstoimprovediagnosticaccuracy．MethodsMay２０１０May２０１３１８０casesofcoronarystentimplantationinpatientsinthisstudyweredividedinto２groupswere９０cases,respectively,and６４０to１２８layerslayerCTAexamination,observationimagequalityandbracketslumenshowrate,thenselectivecoronaryangiographyasthegoldstandard,thesensitivity,specificityandaccuracyofcomparisonbetweenthetwo．ResultsBothat０,０．５,１,１．５points,２points,２．５points,３pointsonthedifferencebetweentheincidencewasstatisticallysignificant(p＜０．０５)．１２８layersand６４０layersCTACTAandselectivecoronaryangiographypaＧtientswasstatisticallysignificantdifference(p＜０．０５);thedifferenceinthedegreeofstenosiswasnotstatisticallysignificant(p＞０．０５)．Conclusion１２８comparedwith６K４０eylawyoerrdsslayerCTACTAdiagnosisofcoronarystentlumenrestenosisismoresignificant,moremeaningfulinthediagnosis．１２８layersCTA;６４０layersCTA;Coronarystent;Lumenrestenosis中图分类号R５４３．３文献标识码B文章编号１００８－６３１５(２０１５)１０－００４３－０１