【摘要】 目的探讨急性脊髓炎的MR I特征。方法对25例急性脊髓炎的临床及MR I影像资料加以分析。结果急性脊髓炎MR I表现特点为:病变区脊髓呈均匀一致性的肿胀增粗,外缘光整,一般多呈轻度增粗(19/25),少数增粗显著(1/25),也可以不增粗,脊髓无外形的改变(5/25);T2加权像病变区脊髓信号增高;病变范围较长,多为4个椎体高度或以上(20/25),上界常高于临床感觉平面;增强MR I检查不显示强化(8/18)或仅有轻度斑片状强化(10/18)。亦对MR I检查的诊断价值和有关的鉴别诊断进行了讨论。结论MR I对急性脊髓炎的诊断价值较大。更多还原

【Abstract】 Objective To study the MRI features of the myelitis.Methods 25 cases of acute myelitis were reported and analysedretrospectively.Results MRI features of the myelitis were as follow :the spinal cord appeared as slightly enlargement in 19 cases（19/25） and only marked enlargement in 1 cases（1/25）.The enlarged portion of the cord generally showed uniformity and a smooth surface.T₂ weighted image demonstrated increased signal within the cord usually extending over four vertebral bodies（20/25）and beyond the level of clinical neurological examination.No enhancement（8/18）or mild speckled enhancement（10/18）was observed on contrast MRI.MRI diagnostic evaluation and its differential diagnosis were discussed.Conclusion MRI is very useful in the diagnosis of the myelitis.更多还原