颈静脉孔区肿瘤的MRI和MRA诊断(附五例报告) |
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引用本文: | 杨秀军,彭仁罗. 颈静脉孔区肿瘤的MRI和MRA诊断(附五例报告)[J]. 中华放射学杂志, 1996, 0(5) |
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作者姓名: | 杨秀军 彭仁罗 |
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作者单位: | 上海市第一人民医院放射科(杨秀军),湖南医科大学附属湘雅医院放射科(彭仁罗) |
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摘 要: | 目的:分析颈静脉孔区肿瘤的影像学特点,探讨MRA对其诊断与鉴别诊断的价值。材料与方法:对5例经手术病理证实的颈静脉孔区肿瘤(颈静脉球瘤2例、神经鞘瘤2例、脑膜瘤1例)病人行MRI和TOF法MRA检查,应用1.0T超导MR系统,在常规MRI基础上采用2D或3DFISP序列和MIP图像后处理技术获取MRA图像。4例有CT,3例有DSA资料。结果:MRI显示了全部病灶和颈静脉孔的扩大与破坏,准确定性诊断了4例,结合MRA后,5例均正确定性诊断。颈静脉球瘤的MRI瘤内流空征和MRA血管团块征颇具特征性。神经鞘瘤与脑膜瘤的MRI信号有别,且前者易囊变,两者MRA均未显示肿瘤血管。结论:MRI,尤其结合MRA对颈静脉孔区肿瘤诊断与鉴别诊断颇有价值。
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关 键 词: | 肿瘤 磁共振成像 血管造影术 |
MRIandMRAdiagnosisoftumorsinjugularforamenarea(reportof5cases) |
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Abstract: | Purpose:Toanalysetheimagingcharacteristicsoftumorsinjugularforamenarea,andtoevaluateMRAindiagnosisanddiferentialdiagnosisofthesetumors.Materialsandmethods:ConventionalMRIwithTOFMRAwasperformedin5pathologicalyprovedcaseswithtumorsinjugularforamenarea(2glomusjugulartumors,2neurilemomasand1meningioma)at1.0Tsuper-conductiveMRsystemusing3Dor2DFISPsequencesandMIPpostprocessingtechnique.CTwasal-soperformedin4casesandDSAin3cases.Results:MRIclearlydemonstratedsoft-tisuemass,en-largementofjugularforamenandbonedestructioninal5cases.Accuratediagnosiswasestablishedin4casesbyMRIandinal5casesbyMRI MRA.Glomusjugulartumorcharacteristicalyap-pearedasmultiplepunctateandserpiginoussignalvoidareasintumormass(flow-void-in-tumorsign)onMRIandneovascularityonMRA.TheMRIsignalsofneurilemomawasalsodiferentfromthatofmeningioma,andtherewerenotumorvesselsonMRAinbothofthem.Conclusion:MRI,especialycombinedwithMRA,wasvaluableindiagnosisanddiferentialdiagnosisoftumorsinjugularforamenarea. |
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Keywords: | NeoplasmsMagneticresonanceimagingAngiography |
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