低场MRI在椎管内脊膜瘤诊断中的临床应用  

Low-field MRI in the diagnosis of spinal meningioma

作　　者：崔胜宏 杨兴亮[1] 张博[1] 田娟[1] 

机构地区：[1]陕西省榆林市第一医院影像科,陕西绥德718000

出　　处：《现代肿瘤医学》2012年第6期1241-1243,共3页Journal of Modern Oncology

摘　　要：目的:探讨低场磁共振对椎管内脊膜瘤的MRI诊断及鉴别诊断。方法:回顾性分析23例经手术和病理证实的椎管内脊膜瘤,观察其发病部位、边缘形态、信号特点、与邻近结构关系及增强表现。结果:23例患者中,男9例,女14例,年龄14-71岁,平均48岁。好发部位依次为上胸段、颈段、胸腰段,腰段,髓外硬膜下,髓外硬膜内外。22例肿瘤形态规则,呈半圆形,椭圆形,脊髓受压移位,可见"硬膜下"征;1例同时累及髓外硬膜内、外的脊膜瘤呈不规则形。18例平扫T1WI呈等、略低信号,5例呈等、低混杂信号,18例T2WI呈等、略高信号,5例呈等、高混杂信号。注射Gd-DTPA后18例呈较均匀强化,5例呈不均匀强化,22例可见"硬膜尾"征。结论:低场MRI能够对椎管内脊膜瘤较准确定位、定性诊断,对外科手术治疗有指导意义。Objective：To investigate the low field MRI diagnosis and differential diagnosis of intraspinal meningioma.Methods：Data of 23 patients with surgical pathologically confirmed intraspinal meningioma were retrospectively studied.Observe the location,shapes of edge,MR signal speciality,cercum-structures and MR-enhancement appearances.Results：Among the 23 cases,9 were males,14 were females,ages range from 14-71years old,mean age was 48 years old.All leisions like the hair part were one by one in order the upper thoracic segments,the cervical segmengts,the thoracic-lumbar segments,the lumbar segments,and they located in spinal subdural or spinal intra-and extra-dura.22 cases had regular shape were some hemicycle,ovoid.Spinal cord was compressed and displaced.Some leisions showed the sign of ＂spinal sub dura＂,1 leision located in intra-and extra-dura had unregular shape.Of all the cases in T1WI,18 were isointense or slightly hypointense signal,5 were iso-and hypo-signal.In T2WI,18 were isointense or slightly hyperintense signal,5 iso-and hyper-signal,18 leisions were homogenous enhancement,5 leisions were hetergenous enhancemengt after injected Gd-DTPA,and 22 leisions were with the sign of ＂dural tail sign＂.Conclusion：Low field MRI can pinpoint the location of meningioma,which have the guiding significance for surgical treatment.

关 键 词：椎管 脊膜瘤 低场MRI 诊断 

分 类 号：R739.42[医药卫生—肿瘤]