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ID:51205527
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时间:2020-03-09
《纤维型脑膜瘤的磁共振成像表现.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、万方数据中国临床医学影像杂志2013年第24卷第2期JChinClinMedImaging,2013,V01.24,No.2q论著嗲纤维型脑膜瘤的磁共振成像表现张晓楠,程敬亮,王斐斐,孙梦恬,林亚南,张风光,杨璐(郑州大学第一附属医院磁共振科,河南郑州450052)·77·【摘要】目的:探讨纤维型脑膜瘤的MRI表现。方法:回顾性分析56例经郑州大学第一附属医院手术和病理证实的纤维型脑膜瘤的MRI平扫、增强和DWI表现。所有病例术前均行MRI常规横轴位T。WI、T2WI、DWI和增强后T。WI扫描。DWI序列扫描后获得ADC图,经后处理获得肿瘤实质和肿瘤对应正常脑白质的ADC
2、值。分析纤维型脑膜瘤的常规MRI、DWI表现和ADC值。结果:56例纤维型脑膜瘤中,常规MRI扫描与正常大脑皮层比较,T,WI上,肿瘤呈等信号40例,略低信号14例,混杂信号2例;T2WI上,肿瘤呈等信号35例,略高信号12例,混杂信号6例,略低信号3例;出现瘤周水肿16例。增强T。WI上,34例均匀强化,21例不均匀强化,1例厚壁环形强化,脑膜尾征32例。DWI上,肿瘤呈等信号31例,稍高信号12例,混杂信号10例,低信号3例。ADC图上,肿瘤呈等信号31例,混杂信号15例,稍高信号6例,低信号4例。56例纤维型脑膜瘤肿瘤实质与正常脑白质ADC值之间的差异有统计学意义(P
3、<0.05);16例伴有瘤周水肿的纤维型脑膜瘤肿瘤实质、瘤周水肿、正常脑白质的ADC值之间的差异有统计学意义(P<0.05)。结论:纤维型脑膜瘤的DWI表现多种多样,DWI是常规MRI基础上诊断纤维型脑膜瘤的一种补充手段。[关键词】脑膜瘤;磁共振成像【中图分类号】R739.45;R730.262;R445.2【文献标识码】A【文章编号】1008—1062(2013)02—0077—04MⅪfindingsoffibrousmeninx"omaZHANGXiao一,mCHENGJing-liang,WANGPei-feiSUNMeng-tian,LINYa-nan,ZHANG
4、Feng-guang,YANGLu(DepartmentofMRI,theFirstAffiliatedHospitalofZhengzhouUniversity,Zhengzhou450052,China)Abstract:objective:TostudyMRIfindingsoffibrousmeningioma.Methods:MRIfindingsof56casesfibrousmenin—giomaconfirmedbysurgeryandpathologywereanalyzedretrospectively.Allpatientunderwentconven
5、tionalaxialTlWI,T2WI,DWIandenhancedMRIscan.ADCmapwasobtainedfromDWIsequencebypost-processingandADCvaluesoftumorandnormalwhitematterincorrespondingareawereacquired.ConventionalMRI,DWIfindingsandADCvaluesoffibrousmenin—giomawereanalyzed.Results:Comparedwithbraincortex,thetumorswereisointense
6、in40cases,hypointensein14casesandmixedsignalintensityin2casesonconventionalT1WIofMRI.OnT2WI,thetumorswereisointensein35cases,slightlyhighsignalintensityin12cases.mixedsignalintensityin6casesandhypointensityin3cases.Peritumormaledemawasfoundin16cases.OnenhancedTlWI,34casesshowedhomogeneouse
7、nhancement,21casesshowedheterogeneousenhance-mentand1caseshowedring-likeenhancement.Duraltailsignwasseenin32cases.OnDWI,31casesshowedisointensity,12casesshowedslighflyhighsignalintensity,10casesshowedmixedsignalintensityand3casesshowedlowsignalintensi—ty.OnADC
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