26例脑膜瘤mri诊断价值的临床分析

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1、26例脑膜瘤MRI诊断价值的临床分析蔡国栋(南通市通州区人民医院放射科226300)【摘要】目的分析脑膜瘤的发病部位和MRI信号特点，探讨MRI对脑膜瘤的诊断价值。方法收集2011.01-2013.05木院收治并经手术或病理证实的26例脑膜瘤病例，对脑膜瘤的MRI表现特点进行回顾性分析，26例均行平扫和增强扫描检查。结果26例患者皆为颅内单一病灶，其中上矢状窦10例，大脑凸面6例，大脑镰旁4例，小脑2例，桥脑1例，侧脑室1例，桥脑小脑三角1例，鞍结节1例；T1WI表现为等信号16例，稍低信号9例，低信号1例；T2WI表现为稍高信号12例，等信号3例，低信号1例，混杂信号1

2、0例；增强扫描均匀强化23例，不均匀强化3例，其中19例见“脑膜尾征”。结论脑膜瘤的MRI表现具有较高的特征性，对脑膜瘤的定性定位诊断具有较高的临床应用价值。【关键词】脑膜瘤MRI诊断【中图分类号】R730.4【文献标识码】A【文章编号】2095-1752(2013)27-0010-01Investigationofthecharacterofmagneticresonanceimaging(MRI)ofmeningiomasGuodongCai(DepartmentofradiologyinTongzhouDistrictpeople'sHospital,Nantong

3、,226300)【Abstract】Objective:Toexplorethecharacterofmagneticresonaneeimaging(MRI)tomeningiomassoastoimprovetheaccuracyrateofmeningiomasdiagnosis.Methods:RetrospectiveanalysisthecharacterofMRIofpatientswithmeningiomasconfirmedbypathologyinourhospitalfromJanuary2011toMay2013.Allpatientswered

4、etectedbyplainseanandenhancementseanning.Results:Allcasesweresingleintracraniallesion.Thelocationof26cases:10caseslocatedinIongitudinalsinus,6caseslocatedinconvexityofbrain,4caseslocatedincerebralfalx,2caseslocatedincerebellum,1caseslocatedinpons,1caseslocatedinlateralcerebralventricle,1c

5、aseslocatedinpontocerebellartrigon巳1caseslocatedintuberculumsellae.ThecharacterofT1WI:figureof16casesshowedequationsignal,figureof9casesshowedslightlowsignal,figureof1caseshowedlowsignal.ThecharacterofT2WI:figureof12casesshowedslighthighsignal,figureof3casesshowedequationsignal,figureof1c

6、aseshowedlowsignal,figureof10casesshowedmixsignal.Thecharacterofenhancementseanning:figureof23casesshowedsign讦icantandevenenhancement,figureof3casesshowedsign讦icantandunevenenhancement,figureof19casesshowedduraltailsign.Conclusion:TheMRIfeatureofmeningiomaswerehighsensitivityanddistinctiv

7、e.Itisvaluetothediagnosisofmeningiomas.【Keydords]meningiomasMRIdiagnosis脑膜瘤(Meningiomas)是起源于脑膜及脑膜间隙的中胚层瘤，是一种最常见的非胶质源性颅内原发性肿瘤，占颅内肿瘤的19%±,仅次于脑胶质瘤[1-3]o多见于上矢状窦旁，其次大脑凸面，大脑镰旁者多见，再次蝶骨悄、鞍结节、嗅沟、小脑桥脑角与小脑幕等部位也可见，生长在脑室内者很少，其它部位偶见。本文对于2011.01-2013.05在本院收治并经手术或病理证实的26例脑膜瘤