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1、双排螺旋CT在颅内脑膜瘤诊断中的应用周华平（浙江杭州市余杭区第五人民医院影像科，浙江杭州311100）[摘要]目的：分析颅内脑膜瘤患者的CT征象，总结其CT表现，以提高脑膜瘤的CT诊断准确率。方法：回顾性分析我院收治的经手术病理证实的32例颅内脑膜瘤患者的CT表现，对其CT资料进行分析和总结。结果：肿瘤位于矢状窦10例，大脑镰8例，鞍结节5例，筛窦4例，海绵窦2例，桥小脑角2例，小脑幕1例；圆形或类圆形21例，不规则形8例，哑铃型3例；CT平扫结果显示，高密度25例，等密度5例，混合密度2例；块状钙化6例，点
2、状钙化8例；21例有瘤周水肿；10例瘤组织与周围脑组织界限不清，22例与周围脑组织界限清楚；27例患者行CT增强扫描，其中23例瘤体呈明显均匀强化；术前CT诊断为脑膜瘤29例（90.63%），误诊3例（9.37%）。结论：脑膜瘤的CT表现具有较典型的影像学特点，且诊断准确率高，可作为术前诊断脑膜瘤的可靠依据。[关键词]脑膜瘤；双排螺旋CT；诊断Theapplicationofdual-slicespiralCTscaninthediagnosisofmeningiomasZHOUHua-ping(Depart
3、mentofImaging,theFifthPeople’sHospitalofYuhangDistrictofHangzhouCity,ZhejiangProvince,Hangzhou311100,China)[Abstract]Objective:ToanalyzetheCTfeaturesofpatientswithintracranialmeningiomas,andsummarizetheirCTfindingstoimprovetheCTdiagnosticaccuracyofmeningiom
4、as.Methods:TheCTfindingsof32patientswithintracranialmeningiomastreatedinourhospitalwereretrospectivelyanalyzed,theirCTdatawerealsoanalyzedandsummarized.Results:Atotalof10casesshowedmeningiomasinsagittalsinus,8incerebralfalx,5intuberculumsellae,4inantrumethm
5、oidale,2incavernoussinus,2incerebellopontineangle,1intentoriumofcerebellum;21casespresentedroundorellipticuslesions,8presentedirregularlesions,and3presenteddumb-belllesions;resultsofCTplainscanshowedthat,25casespresentedhighdensity,5showedisodensity,and2sho
6、wedmixeddensity;6casespresentedconglomeratecalcification,and8presentedpunctatecalcification;21showedoedemaaroundthelesions;10showedunclearedgewithadjacenttissues,and22showedclearedgewithadjacenttissues;atotalof27patientsunderwentenhancedCTscan,and23presente
7、dobviousuniformenhancement;29patients(90.63%)werediagnosedasmeningiomasbyCTscanbeforesurgery,and3weremisdiagnosed.Conclusion:MeningiomashastypicalCTfindings,anditsdiagnosticaccuracyisveryhigh,soitcanserveasareliablebasisforthepreoperativediagnosisofmeningio
8、mas.[Keywords]Meningiomas;Dual-slicespiralCTscan;Diagnosis脑膜瘤（meningiomas）是中枢神经系统最常见的良性肿瘤，发病率占颅内肿瘤的19.2%，仅次于脑胶质瘤而居第2位；此病好发于女性，男女之比约为1∶2。脑膜瘤的发病高峰年龄在45岁，儿童发病少见，其主要好发于矢状窦旁、大脑凸面及大脑镰旁，其次为蝶骨嵴、鞍结节、嗅沟、小脑桥脑角与小脑
