髓外硬膜下常见肿瘤的MRI诊断

MRI of Outer Spinal Cord and below Putamen Tumer

目的评价MRI对髓外硬膜下肿瘤的诊断价值。方法经手术病理证实的髓外硬膜下肿瘤共19例。包括神经鞘瘤8例,脊膜瘤11例,MRI检查采用SE序列,所有病例均做Gd—DTPA增强检查。结果TSE序列为椎管病变检查的首选序列。神经鞘瘤的特征：形态呈圆形、卵圆形,大多为哑铃状,信号欠均匀。脊膜瘤的特征：硬膜尾征,信号均匀。结论MRI可清楚显示脊髓外硬膜下肿瘤的全貌及周围情况,从而帮助做出诊断。

Objective Appraises MRI to the marrow outside under the hard membrane the tumor diagnosis value, Methods After outside surgery pathology confirmation marrow under hard membrane tumor altogether 19 examples, including neurilemmoma 8 examples, meningioma 11 examples, the MRI inspection uses the SE sequence, all cases of illness make the Gd - DTPA enhancement inspection. Results The TSE sequence the first choice sequence which inspects for vertebra the pathological change, Neurinoma characteristic： The shape assumes the circular, the egg circular, mostly is the dumb bells shape, the signal owes evenly. Meningioma characteristic： The hard membrane tail drafts, the signal is even, Condusion MR/may clearly demonstrate outside the spinal cord under the hard membrane the tumor complete picture and the ambient condition, thus helps to make the diagnosis.