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1、宁夏医科大学硕士研究生学位论文中文摘要BA在Vs值与PI值对比有统计学差异。（5）以CTA为参照：TCD诊断后循环动脉病变的灵敏度、特异度、假阳性率、假阴性率、阳性预测值、阴性预测值分别为62.71℅、95.58℅、4.42℅、37.29℅、78.72℅、90.76℅，Kappa值为0.63。（6）以MRA为参照：TCD诊断后循环动脉病变的灵敏度、特异度、假阳性率、假阴性率、阳性预测值、阴性预测值分别为60.81℅、92.21℅、7.79℅、39.19℅、71.43℅、88.02℅，Kappa值为
2、0.558。结论TCD检测方法结果可靠，且无创、可动态重复、简便易行，是临床作为PCI患者筛查的首选方法。关键词后循环缺血，经颅多普勒超声，血流参数，血流频谱形态II万方数据宁夏医科大学硕士研究生学位论文英文摘要TranscranialDopplerultrasoundforthediagnosisofposteriorcirculationischemiaABSTRACTObjectiveObservedposteriorcirculationischemiabytranscranialDopp
3、lerbloodflowcharacteristicsandspectralparameterschange;evaluatethediagnosticvalueoftheposteriorcirculationischemiabytranscranialDopplerultrasound.MethodsContinuouscollectionofNingxiaMedicalUniversityGeneralHospital,DepartmentofNeurology,cardiovascular
4、andcerebrovasculardiseasefromMarch2012toMarch2013in-patients,whetherbasedonbrainMRIfindingsmayexplaintheclinicalsymptomsofPCI,theresponsibilitylesionsandsignsofbloodsupplytotheposteriorcirculationarea,aswellasinclusionandexclusioncriteria,thefinalchoi
5、ceof120casesofPCIpatientsastheexperimentalgroup,thesameperiodinourhospitalexaminationmood,historyofcerebrovasculardiseaseandbrainhealthin60casesasacontrolgroup.AllenrolledsubjectswereperformedtranscranialDopplerultrasound(TCD)examination,PCIgroupwerep
6、erformedCTAorMRAexaminationtocheckandmakecomparativeanalysis;whilerecordingthepatient'sage,bloodpressure,bloodglucose,lipidsandothergeneralconditions.TCDdetectionexperimentalgroup,controlgroupofintracranialarteries,afterrecordingbilateralposteriorcere
7、bralartery(PCA),bilateralvertebralartery(VA),basilarartery(BA)systolicvelocity(Vs),meanvelocity(Vm),diastolicvelocity(Vd)andobservethespectrummorphologicalchangesandarterypulsatilityindex(PI),thetwosetsoftestresultsdocomparativeanalysis.Results(1)Inth
8、eexperimentalgroupweredetectedinthebloodvesselIII万方数据宁夏医科大学硕士研究生学位论文英文摘要600,whichBA120,VA240,PCA240,TCDdetectedobliteration5,mildstenosis43,15moderatestenosis,severestenosis2,whereVA(38),BA(17),PCA(10);(2)TheSubclavianstealsyndrome(SSS)2cases,
