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1、e-Speed電子束CT冠狀動(dòng)脈造影心電觸發(fā)掃描時(shí)相與圖像質(zhì)量鄒利光基金項(xiàng)目:GE公司聯(lián)合研發(fā)基金(2004E036)作者簡(jiǎn)介:鄒利光(1964—),男,四川省江油市人,碩士,主任醫(yī)師、教授,主要從事胸部X線診斷研究。電話:(023)68774676,e-mail:zoulg@mail.tmmu.com.cn通訊作者:戚躍勇,電話:(023)68774678收稿日期:修回日期:孫清榮戚躍勇,王文獻(xiàn)文利 梁開運(yùn)雷福章 衛(wèi)靜(本教研室原創(chuàng),發(fā)表于:第三軍醫(yī)大學(xué)學(xué)報(bào),2006年第一期。wjl上傳)提要:目的總結(jié)冠狀動(dòng)脈e-Speed電子束CT血管造影(elec
2、tronbeamcomputedtomographyangiography,EBCTA)檢查結(jié)果,分析心電(ECG)觸發(fā)掃描時(shí)相與圖像質(zhì)量的關(guān)系。方法疑診冠心病或健康查體來我院行冠狀動(dòng)脈EBCTA檢查92例,以容積再現(xiàn)(volumerendering,VR)重建圖像為評(píng)價(jià)主要依據(jù),參考其他圖像后處理結(jié)果,將EBCT冠狀動(dòng)脈造影圖像質(zhì)量分為6個(gè)等級(jí)(6~1分),與ECG觸發(fā)掃描時(shí)相對(duì)照分析。結(jié)果左冠狀動(dòng)脈主干和右冠狀動(dòng)脈近段顯示圖像質(zhì)量最佳,平均分值為4.53和4.49,其次為左前降支近段和左旋支近段,平均分值為4.43和4.30。比較心動(dòng)周期不同時(shí)相掃描
3、,左冠狀動(dòng)脈主干和左前降支圖像質(zhì)量變異較小,而右冠狀動(dòng)脈和左旋支的圖像質(zhì)量變異較大,以收縮期末較好。結(jié)論ECG觸發(fā)掃描時(shí)相影響冠狀動(dòng)脈EBCTA圖像質(zhì)量,收縮期末觸發(fā)的多時(shí)相掃描可兼顧冠狀動(dòng)脈各分支血管顯示,提高診斷準(zhǔn)確性。關(guān)鍵詞:冠狀動(dòng)脈;心臟??;電子束CT;心電觸發(fā);心動(dòng)周期10Electrocardiographytriggeringphaseandimagequalityine-SpeedEBCTcoronaryarteryangiographyZOULi-guang,QIYUE-Yong,SUNQing-rong,WANGWen-xian,WE
4、NLi,LIANGKai-yun,LEIFu-zhang,WEIJing(DepartmentofRadiology,XinqiaoHospital,ThirdMilitaryMedicalUniversity,Chongqing400037,China)Abstract:ObjectiveTosummarizetheresultsofcoronaryarteryelectronbeamcomputedtomographyangiography(EBCTA)andanalyzetherelationshipofelectrocardiography(EC
5、G)triggeringphaseandimagequality.MethodsNinetytwocasesofsuspectedcoronaryarterydiseaseorhealthscreeningwereexaminedwithe-SpeedEBCT.Dependingmainlyonvolumerendering(VR),theimagesweredividedintosixgrades(score6-1)andanalyzedincomparingwithECGtriggeringphase.ResultsTheimagequalityof
6、leftmainartery(LMA)andproximalrightcoronaryartery(RCA)wasbestwithaveragescoresof4.53and4.49respectively,followedbyproximalleftanteriordescendingartery(LAD)andproximalleftcircumflex(LCX).Comparingscansindifferentphasesofcardiaccycle,imagequalityvariedslightlyinLMAandLADbutobviousl
7、yinRCAandLCX.ConclusionImagequalityofcoronaryarteryEBCTAisrelatedtoECGtriggeringmode.Multiphasescantriggeredinlatesystolewillyieldrathersatisfactoryimages.Keywords:coronaryartery;heartdisease;electronbeamcomputedtomography;electrocardiographytriggering;cardiaccycle10電子束CT血管造影(EBC
8、Tangiography,EBCTA)用于冠狀動(dòng)脈粥樣硬化斑塊和狹窄的檢查診斷已