缺血性卒中后传导性失语的磁共振扩散张量成像研究.docx
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1、缺血性卒中后传导性失语的磁共振扩散张量成像研究陆强彬I张慧萍I,陆梦茹1,姜岐涛2南通大学附属江阴医院神经内科I、影像科2,江苏江阴214400摘要目的利用磁共振扩散张量成像(DTD技术探讨缺血性卒中后传导性失语患者语言功能区的神经纤维损伤情况。方法选择缺血性卒中后传导性失语患者20例为实验组,以及同期健康志愿者20例为对照组。采用3.0T磁共振成像系统,行头颅磁共振(MRI)和扩散张量成像(DTD检查。由DTl后处理软件生成感兴趣区(RoI)各向异性指数(FA)、表观弥散系数(ADC)、容积比各向异性(VRA)及衰减指数(EXat)值,比较实验组病灶侧、病灶对侧以及实验组与对照组间的差异,分
2、析缺血性卒中后传导性失语的DTI特征。结果实验组左侧Broca区、Wernicke区及弓状纤维束FA值分别为0.2120.041、0.2310.045、0.2950.038;ADC值分别为0.6820.128、0.6900.123、0.6640.12hVRA值分别为0.1620.0650.1730.0710.1550.063;Exat值分别为0.6330.1140.6090.1030.6490.112o实验组与对照组左侧Re)I比较,实验组左侧BroCa区、Wernicke区及弓状纤维束FA值均低于对照组(PV0.05或PV0.01);实验组左侧弓状纤维束ADe值、VRA值低于对照组(PV0.
3、05),两组左侧BroCa区、WemiCke区ADC值、VRA值无显著性差异(P0.05);实验组左侧BroCa区及弓状纤维束Exat值高于对照组(PV0.05)。实验组左右侧ROI比较,左侧Broca区、Wernicke区及弓状纤维束FA值均低于右侧(PV0.05或PV0.01);实验组左侧BroCa区及弓状纤维束ADC值、VRA值低于右侧(PV0.05或PV0.01),两侧WerniCke区ADC值、VRA值无显著性差异(P0.05);实验组左侧BroCa区、Wernicke区及弓状纤维束EXat值均高于右侧(PV0.05或PV0.01)。纤维追踪技术研究显示,实验组患者病灶侧纤维束明显减
4、少。结论缺血性卒中后传导性失语患者弓基金项目:南通大学临床医学专项项目(编号:2019LY021)通信作者:张慧萍,Emai1:状纤维束及BroCa区、WemiCke区神经纤维束均有不同程度受损。DTI技术可用于诊断及评估此类患者语言功能区的破坏情况。关键词1缺血性卒中;传导性失语;磁共振扩散张量成像MagneticResonanceDiffusionTensorImagingStudyofConductiveAphasiaafterIschemicStroke1.UQiangbin,ZHANGHuiping,LUMengru,JIANGQitao(!.DepartmentofNeurolog
5、y,JiangyinHospitalAffiliatedtoNantongUniversity,Jiangyin214400,China;2.DepartmentofImaging,JiangyinHospitalAffiliatedtoNantongUniversity,Jiangyin214400,China)Abstract:ObjectiveToinvestigatethenervefiberinjuryinthespeechareaofpatientswithconductionaphasiaafterischemicstrokebyusingdiffusiontensorimagi
6、ng(DTI).Methods20patientswithconductionaphasiaafterischemicstrokewereselectedastheexperimentalgroupand20healthyvolunteersasthecontrolgroup.The3.OTMRsystemwasusedfortheexaminationofcranialmagneticresonance(MRI)anddiffusiontensorimaging(DTI).DTIsoftwarewasusedtogeneratefractionalanisotropy(FA),apparen
7、tdiffusioncoefficient(ADC),volumeratioanisotropy(VRA)andexponentialattenuation(Exat)valuesofROLComparethedifferencebetweenthefocussideandtheoppositesideofthefocusintheexperimentalgroup,aswellasthedifferencebetweentheexperimentalgroupandthecontrolgroup.AndanalysistheDTIcharacteristicsofconductionapha
8、siaafterischemicstroke.ResultTheFAvaluesofBrocaarea,Wernickeareaandarcuatefiberbundleontheleftsideoftheexperimentalgroupwere0.2120.0410.2310.045、0.2950.038;TheADCvalueswere0.6820.128、0.6900.1230.6640.121;TheVRAvalueswere0.1620.065、0.1730.0710.1550.063;TheExatvalueswere0.6330.1140.6090.1030.6490.112.
9、TheFAvaluesofBrocaarea,Wemickeareaandarcuatefiberbundleintheleftsideoftheexperimentalgroupwerelowerthanthoseofthecontrolgroup(P0.05orP0.01);TheADCvaluesandVRAvaluesofarcuatefiberbundleintheleftsideoftheexperimentalgroupwerelowerthanthoseofthecontrolgroup(P0.05);TheExatvaluesofBrocaareaandarcuatefibe
10、rbundleintheleftsideoftheexperimentalgroupwerelowerthanthoseofthecontrolgroup(P0.05).ComparetheROIbetweenleftandrightsidesinexperimentalgroup,TheFAvalueofBrocaarea,Wernickeareaandarcuatefiberbundleontheleftsidewaslowerthanthatoftherightside(P0.05orP0.01);TheADCvalueandVRAvalueofBrocaareaandarcuatefi
11、berbundleontheleftsideoftheexperimentalgroupwerelowerthanthatoftherightside(P0.05orP0.05);TheExatvalueofBrocaarea,Wemickeareaandarcuatefiberbundleontheleftsideoftheexperimentalgroupwerehigherthanthatoftherightside(P0.05orP高密度脂蛋白胆固醇(HDLC)、吸烟史、饮酒史方面无显著差异(P0.05);实验组低密度脂蛋白胆固醇(LDL-C)水平高于对照组(PV0.05)。见表1。表
12、1实脸组及对照组一般临床资料比较变量实验组(n=20)对照组(n=20)t2P年龄(岁)67.528.6366.898.490.230.409性别(n,女/男)8/128/120.001.000受教育年限(年)8.933.099.123.360.190.427高血压史(n,有/无)9/117/130.420.519糖尿病史(n,有/无)5/153/170.160.693TC(mmolL)4.121.024.231.180.320.377TG(mmolL)1.930.642.220.711.360.091HDL-C(mmolL)1.560.611.430.560.700.243LDL-C(mmo
13、lL)3.011.022.490.851.750.044吸烟史(n,有/无)7/139/110.420.519饮酒史(n,有/无)7/135/150.480.4902.2实验组与对照组感兴趣区DTl参数比较实验组与对照组左侧ROI比较,实验组左侧Broca区、Wernicke区及弓状纤维束FA值均低于对照组(PV0.05或P0.05);实验组左侧Broca区及弓状纤维束Exat值高于对照组(P0.05)o见表2。实验组左右侧ROI比较,左侧Broca区、Wernicke区及弓状纤维束FA值均低于右侧(PV0.05或P0.01);实验组左侧Broca区及弓状纤维束ADC值、VRA值低于右侧(PV
14、0.05或P0.05);实验组左侧Broca区、Wemicke区及弓状纤维束Exat值均高于右侧(PV0.05或PV0.01)。见表2。表2实验组与对照组各区DTl参数值比较组别n参数Broca区Wernicke区弓状纤维束左侧右侧tP左胡右侧IP左侧右侧P实脸组20FA0.2120.04l0.2430.0502.140.0190.2310.()450.2590.0362.170.0180.2950.0380.3480.0513.730.000对照组200.2380.0310.2630.0550.3410.042t2.262.013.63P0.0150.0260.000实脸组20ADC0.68
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- 缺血性 卒中后 传导性 失语 磁共振 扩散 张量 成像 研究
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