双核素心肌断层显像方法

双核素心肌断层显像方法

仪器

◆采用elscintvaricamSPECT(GE

(UHEC)。

◆双探头采用90度垂直位(L-mode)

进行分步采集。双核素心肌断层显像方法

体位◆患者取仰卧位，双手抱头充分暴露心前区。◆探头尽量贴近患者以最大限度增加计数，减少噪声。

双核素心肌断层显像方法

采集条件采集程序为系统自带双核素断层采集程序(HEI/MIBIECTDualIsotope);能峰为140kev及511kev、窗宽20%；矩阵64×64；采集时间为30-35秒；探头旋转角度为90度(由左前至右后共180度）、每3度一帧分步采集。双核素心肌断层显像方法

处理条件采用滤波反投影法进行重建，分别得到水平长轴、短轴及垂直长轴三个断面的图象；滤波函数采用butterworth,截止频率为0.45,权重值为。双核素心肌断层显像方法血糖调节

静脉注射99Tcm-MIBI20mCi，45分钟后测定患者的血糖浓度，将血糖浓度控制在之间。如果患者血糖浓度低于需要口服葡萄糖补充，如果血糖浓度高于则需要皮下注射胰岛素降低血糖浓度。在血糖控制后10-15min，静脉注射18F-FDG6-8mCi，一小时后显像。双核素心肌断层显像方法

Case1LJZHistory:67–year-oldmale,2yearshistoryofprogressivetypicalexertionalanginaandinferiormyocardialinfarction.Cardiacriskfactorsincludedage,knownhistoryofCAD.TherestingECGrevealedsinusbradycardiaandevidenceofanoldinferiormyocardialinfarction.

双核素心肌断层显像方法

ClinicalcourseCardiaccatheterizationrevealeda100%LADlesionand90%narrowingoftherightcoronaryartery.Thepatientunderwentsuccessfulcoronarybypasssurgery.

双核素心肌断层显像方法DISAimagingprotocol

MIBIPlasmaglucoseFDGDISA0′40′60′120′(min)Plasmaglucose140~160mg%.Plasmaglucoselevel140mg%,50-75gglucose.Diabetesmellitus,Insulinwassubcutaneouslyinjectedaccordingtotheplasmaglucose.双核素心肌断层显像方法Case2WCDA62-year-oldfemalewithnopastcardiachistorypresentedwitha6monthhistoryofexertionalchestpainwithbothtypicalandatypicalfeature.Cardiacriskfactorsincludedhypercholesterolemia,familyhistoryofCAD.TherestingECGrevealednormal.双核素心肌断层显像方法HospitalcourseCardiaccatheterization:LAD90%,LCX80%,RCA60%Clinicaldiagnosis:CADAnginapectorisThepatientunderwentCABG.

双核素心肌断层显像方法Case3LJX44-year-oldmalewithoutknownCADpresentedwitha3yearhistoryofatypicalchestpainanddyspneaonexertion.Cardiacriskfactorsincludedcigarettesmoking.Nohistoryofhypertension,diabetesmellitus.ECGrevealednonsepecificTwaveabnormalities.Echocardiographyrevealeddilatedleftventricleandatrium.Severeleftventricularhypokinesis.LVEF=25%

双核素心肌断层显像方法ClinicalcourseCardiaccatheterization:Threecoronaryvessels.Therewasa80%LADlesion,90%narrowoftheleftcircumflexarteryand50%lesionintherightcoronaryartery.OnemonthlaterthepatientunderwentCABG.

双核素心肌断层显像方法Case4GTBA58-year-oldmanpresentedwithmildcongestiveheartfailure1year.Hehadoftenexperiencedachesttightness,andshortnessofbreath.Cardiacriskfactorsincludedageandhypercholesterolemia.TherestingECGrevealedLBBB.TherestingMIBI-FDGSPECT(DISA)wasperformed.双核素心肌断层显像方法ClinicalcourseCardiaccatheterization:threecoronaryarterydisease,LAD80%LCX60%RCA95%ThepatientunderwentPTCAofmidRCAlesion.双核素心肌断层显像方法Case5

Aman52-year-oldpresentedwithprogressiveexertionalanginadespitemaximalmedicaltherapy.Hehadhadtwopreviousmyocardialinfarction.CardiacriskfactorsincludedknownCAD,age,hypertensionandfamilyhistoryofCAD.HisrestingECGrevealedevidenceofanoldanteriormyocardialinfarction.双核素心肌断层显像方法ClinicalcourseCardiacCatheterization:100%LADlesion,100%proximalcircumflexmarginallesion.Ventriculogramrevealedananteroapicalaneurysm.ThepatientunderwentCABGandneurysmectomy.双核素心肌断层显像方法Case6CBKA66-year-oldwithoutknowCADpresentedwithrecentonsetofchestfullnessonexertion,whichwasrelievedwithrest.Cardiacriskfactorsincludeddiabetesmellitusandtobaccouse.TherestingECGwasnormal.双核素心肌断层显像方法ClinicalcourseCardiaccatheterization:90%stenosisofLAD.ThepatientunderwentsuccessfulofPTCAandstentoftheproximalLADlesion.双核素心肌断层显像方法Case7HsyiA67–year-oldmalepresentedwithatypicalchestpainandshortnessofbreath.Hehadexperiencedananteriormyocardialinfarction8yearprior.Hehadstoppedsmokingcigarettes,andhishyperlipidemiaandhypertensionwerewellcontrolledwithmedication.TherestingECGrevealedanoldanteriormyocardialinfarction.双核素心肌断层显像方法HospitalcourseCardiaccatheterization:LAD100%,LCXmid90%stenosis.Thepatientwastreatedwithmedicine.双核素心肌断层显像方法Case8MzlA46-year-oldmalewithahistoryofmyocardialinfarction2years.Cardiacriskfactorsincludedcigarettesmoking.TherestingECGrevealedanoldinferiormyocardialinfarction.双核素心肌断层显像方法Case9SltA49-year-oldmalehadhadananteriormyocadialinfarction1yearpreviously.Recentlyhebegantohypotensionandmildcongestiveheartfailure.Cardiacriskfactors:age,positivefamilyofCAD.双核素心肌断层显像方法HospitalcourseCardiaccatheterization:(1)LAD100%occulsion;(2)anteroapicalaneurysm.Cardiacdeath,onemonthlater.双核素心肌断层显像方法Case10A58-years-oldmalewithhypertensionof8yearsdurationhadaninferiormyocardialinfarction2yearsbefore.Cardiacriskfactorsincludedageandhypertension.TherestingECGrevealedanoldinferiormyocardialinfarction..双核素心肌断层显像方法HospitalcourseCoronaryangiographyshowedthreevesslesstenosis.LAD70%LCX60%RCA95%ThepatientunderwentPTCAofRCA.双核素心肌断层显像方法Cedars-Sinai法门控

心肌断层显像双核素心肌断层显像方法结果左室局部功能比较

77例患者的539段心肌节段中，门控MIBI显像和LVG的符合率为82.9%；门控FDG显像和LVG的符合率为78.9%。双核素心肌断层显像方法LVG和门控MIBI比较

门控MIBILVG0123024919100109818020266193001239两者符合率达82.9%双核素心肌断层显像方法LVAG和门控FDG比较