MRI诊断平山病的应用价值

Diagnostic value of MRI in hirayama disease

目的回顾性分析平山病患者的颈椎中立位和过曲位MRI表现,探讨MRI对平山病的诊断价值。方法 14例经临床确诊为平山病患者,均行颈椎过屈位MRI检查,其中11例患者行中立位MRI检查,分别对患者不同体位的MRI图像进行分析。结果 11例行颈椎中立位MRI检查的患者中,存在颈椎曲度异常者7例,脊髓出现萎缩、变细者6例,失连接现象仅4例;14例行颈椎过屈位检查的患者均存在硬膜囊后壁前移、脊髓受压变细、硬膜囊外后间隙扩张、失连接现象等征象,其中5例脊髓内出现长T2信号,且出现部位略高于脊髓受压最显著处。结论颈椎过屈位MRI对诊断平山病具有重要价值。

Objective To analyze the MRI findings of cervical spine in patients with birayama disease,and to explore the diagnostic value of MRI in birayama disease.Methods 14 patients diagnosed as hirayama disease were all performed MRI in flexion position,and 11 patients were performed in neutral posion by MRI examinations.The MRI images of patients in different posions were analyzed.Results In the neutral position of 11 patients,MRI showed 7 cases with abnormal curvature of cervical spine,in which 6 cases were atrophy and thinning of spinal cord.The loss of attachment was only 4 cases.14 cases of cervical flexion examinations showed the presences of the posterior wall of the dural sac,the compression of the spinal cord,the expansion of the posterior epidural space and the loss of attachment.Moreover,there were 5 cases with T 2 high signal in the spinal cord,and the location of abnormal signal in spinal cord was slightly higher than the most prominent position of compression in the spinal cord.Conclusion MRI characteristic of neck flexion has significant value in the diagnosis of hirayama disease.