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1、CTA联合自适应统计迭代重建技术在冠状动脉病变患者中的应用舒礼良黄功成张永高朱效华黄辰徐敬郑州大学第一附属医院心外科郑州大学第一附属医院放射科摘要:目的探讨CT血管成像(Computertomographicangiography,CTA)联合自适应统计迭代重建技术(AdaptivestatisticalIR,ASIR)在冠状动脉病变患者中的应用价值。方法收集2012年2月-2016年4月我院收治的78例冠状动脉病变患者的临床资料,所有患者入院均接受CTA或CTA联合ASIR成像检查,其中38例接受常规CTA检查(A组),扫描数据采用120kVP联合滤波反
2、投影重建(Filteredbackprojection,EBP),其余40例采用CTA+AS1R技术,应用ASIR40%重建(B组),比较两组成像质量及患者有效辐射剂量。结果B组图像质量评分为1分所占比例高于A组,其评分为2分所占比例低于A组(P<0.05)出组信噪比(Signaltonoiseratio,SNR)、对比噪声比(Contrasttonoiseratio,CNR)均高于A组,噪声低于A组(P<0.05);B组容积CT剂量指数(CTdoseindexvolume,CTDlvol)、剂量长度乘积(Doselengthproduct,DLP)、有效
3、剂量(Effectivedose,ED)均低于A组(P<0.05)。结论CTA联合ASIR可提高冠脉病变患者成像质量,降低患者受辐射剂量,安全可行。关键词:冠状动脉病变;CT血管成像自适应统计迭代重建;收稿日期:2017-07-06ApplicationofCTACombinedAdaptiveSta/tisticalIterativeReconstruetioninPatientswithCoronaryArteryDiseaseSHULiTiangHUANGGong-chengZHANGYong—gaoCardiacSurgery,TheFirstAf
4、f订iatedHospitalofZhengzhouUniversity;Abstract:ObjectiveToinvestigatetheapplicationvalueofcomputertomographicangiography(CTA)combinedwithadaptivestatisticaliterativereconstruetion(ASIR)inpatientswithcoronaryarterydisease.MethodsTheclinicaldataof78patientswithcoronaryarterydiseasetr
5、eatedinourhospitalfromFebruary2012toApri12016werecollected.AllpatientswereexaminedwithCTAorCTAcombinedwithASIRimaging.Amongthem,38patientswereexaminedwithCTA(Agroup),andthesearmingdatawerereconstruetedwith120kVPcombinedwith"ltcredbackprojeetion(FBP)•Theother40patientswereexaminedw
6、ithCTAcombinedwithASIRandthedatawerereconstructedwithASIR40%(Bgroup).Theimagingqualityandeffectiveradiationdoseofthetwogroupswerecompared.ResultsTheproportionofimagequalityscoreof1pointinBgroupwashigherthanthatinAgroup,andtheproportionof2pointswaslowerthemthatinAgroup(P<0.05)•Thes
7、ignal-to-noiseratio(SNR)andthecontrasttonoiseratio(CNR)inBgroupwerehigherthanthoseinAgroup,andthenoisewaslowerthanthatinAgroup(P<0.05)•TheCTdoseindexvolume(CTDTvol),doselengthproduct(DLP)andeffectivedose(ED)inBgroupwerelowerthanthoseinAgroup(P<0-05)•ConclusionCTAcombinedwithASIRca
8、nimprovetheimagingqualityofpatien