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1、CTA聯(lián)合自適應統(tǒng)計迭代重建技術(shù)在冠狀動脈病變患者中的應用舒禮良黃功成張永高朱效華黃辰徐敬鄭州大學第一附屬醫(yī)院心外科鄭州大學第一附屬醫(yī)院放射科摘要:目的探討CT血管成像(Computertomographicangiography,CTA)聯(lián)合自適應統(tǒng)計迭代重建技術(shù)(AdaptivestatisticalIR,ASIR)在冠狀動脈病變患者中的應用價值。方法收集2012年2月-2016年4月我院收治的78例冠狀動脈病變患者的臨床資料,所有患者入院均接受CTA或CTA聯(lián)合ASIR成像檢查,其中38例接受常規(guī)CTA檢查(A組),掃描數(shù)據(jù)采用120kVP聯(lián)合濾波反
2、投影重建(Filteredbackprojection,EBP),其余40例采用CTA+AS1R技術(shù),應用ASIR40%重建(B組),比較兩組成像質(zhì)量及患者有效輻射劑量。結(jié)果B組圖像質(zhì)量評分為1分所占比例高于A組,其評分為2分所占比例低于A組(P<0.05)出組信噪比(Signaltonoiseratio,SNR)、對比噪聲比(Contrasttonoiseratio,CNR)均高于A組,噪聲低于A組(P<0.05);B組容積CT劑量指數(shù)(CTdoseindexvolume,CTDlvol)、劑量長度乘積(Doselengthproduct,DLP)、有效
3、劑量(Effectivedose,ED)均低于A組(P<0.05)。結(jié)論CTA聯(lián)合ASIR可提高冠脈病變患者成像質(zhì)量,降低患者受輻射劑量,安全可行。關(guān)鍵詞:冠狀動脈病變;CT血管成像自適應統(tǒng)計迭代重建;收稿日期:2017-07-06ApplicationofCTACombinedAdaptiveSta/tisticalIterativeReconstruetioninPatientswithCoronaryArteryDiseaseSHULiTiangHUANGGong-chengZHANGYong—gaoCardiacSurgery,TheFirstAf
4、f訂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