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1、13632014年第16卷第11期(总第133期)多发性硬化CT•MRI诊断价值研究高万本，王艳菊，张婕，邹兴雄，姚洪超，卓丽华(四川绵阳市第三人民医院CT室，绵阳621000)【摘要】目的：探讨脑多发性硬化(MS)的CT、MRI的影像特征及其诊断价值。方法：搜集确诊的MS常规脑CT、MRI图像55例，分析其CT、MRI特点及T1WI低信号病灶于DWI图像信号特点。结果：①55例CT扫描检查，有42例行增强扫描，阳性者30例，25例显示正常。12例双侧侧脑室旁白质、皮层下区以及半卵圆中心白质区为多发散的点片状低密度阴影；17例有结节状或环状
2、轻、中度强化；1例脑萎缩。②MRI检查55例患者均为阳性。12例、早期和缓解期表现为T1WI上病灶中心呈低信号，T2WI和FLAIR病灶中心呈高信号。23急性期表现为T2WI上表圆形高信号，外周布以稍高信号带。17例出现胼胝体伴脑萎缩改变，T2WI见有斑点状高信号，T1WI见其下界呈锯齿状改变。3例发现视神经信号异常。结论：MRI和DWI能发现许多CT不能显示的病灶，MRI和DWI可反映出MS时间和空间多发性的特点，结合其相对特异的特点，在诊断MS方面有重要的临床指导意义。【关键词】多发性硬化；CT成像；磁共振成像；弥散加权成像【中图分类号
3、】R814.42【文献标识码】A【文章编号】1009-0959(2014)11-1363-02DiagnosticValueStudyoftheMultipleSclerosisUsingCT•MRIImagingsGaoWan-ben,WangYan-ju,ZhangJie,etal.(DepartmentofRadiology,theThirdPeople’sHospitalofMianyang,Mianyang621000,China)【ABSTRACT】Objective:Toinvestigatethebrainmultiples
4、clerosis(MS)imagecharacteristicsandthediagnosticvalueofCT,MRI.Methods:MSfindingsof55casesofnormalbrainCT,MRIimagediagnosis,analysisoftheCT,MRIfeaturesandT1WIlowsignallesionsonthecharacteristicsofDWIimagesignal.Results:①55patientsunderwentCT,42casesunderwentenhancedscan,30c
5、aseswerepositive,25casesshowednormal.12casesofbilateralperiventricularwhitematter,subcorticalareasandwhitematterregionssemiovalcenterismoredivergencepointsheetoflowdensityshadows;17casesofnodularorcycliclight,moderateenhancement;1casesofcerebralatrophy.②TheMRIexaminationof
6、55patientswerepositive.In12cases,earlyandremissionstageperformancefortheT1WIcenteroflesionshowedlowsignal,T2WIandFLAIRthecenterofthelesionshowedhighsignal.23acutestageofperformancefortheT2WItableroundhighsignal,outsideweekwithslightlyhighsignal.In17caseswithcerebralatrophy
7、ofcorpuscallosum,T2WIsawadotlikehighsignal,T1WIsawitslowerboundserratedchange.3caseswerefoundabnormalopticnervesignal.Conclusion:MRIandDWIcanbefoundinmanyCTcannotdisplaythelesions,MRIandDWIcanreflectthecharacteristicsoftheMStimeandspacemultiple,combinedwithitsrelativelyspe
8、cificcharacteristics,hasimportantclinicalsignificanceinthediagnosisofMS.【KEYWORDS】Multipl
