平山病的MRI诊断  

MRI Diagnosis of Hirayama disease

作　　者：周卫军[1] 计明珍[2] 窦娅芳[3] 王省白[1] 陆黎明[1] 冯捷[1] 徐中华[1] 

机构地区：[1]浙江中医药大学附属嘉兴市中医院放射科,浙江314001 [2]浙江中医药大学附属嘉兴市中医院内科十病区,浙江314001 [3]复旦大学华山医院放射科,上海200040

出　　处：《放射学实践》2012年第9期954-956,共3页Radiologic Practice

摘　　要：目的:总结分析平山病的MRI表现,探讨MRI对平山病的诊断价值。方法:回顾性分析经临床及肌电图证实为平山病的11例患者的影像资料。结果:9例颈椎生理曲度变直或反弓;11例均有MRI上低位颈髓不同程度变扁、变细、萎缩,屈曲位均可见背侧硬脊膜向前移位、后硬脊膜外间隙增宽及弧形或梭形T2WI异常高信号。结论:平山病的MRI表现有一定的特征性,低位颈髓的局限性萎缩、细扁改变、屈曲位后硬脊膜外间隙T2WI高信号及流空信号对本病的诊断具有重要价值。Objective：To explore the MRI findings of Hirayama disease,and to study the diagnostic value of MRI.Methods：The MRI data of 11 clinically proven Hirayama patients were retrospectively analyzed.Results：The cervical manifestations including straight or kyphotic cervical curvature were found in 9 cases.Atrophy and flatterning of the lower cervical cord were observed in all eleven cases.At flexion position,the anterior shifting of cervical dural sac,the widened epidural space and posterior epidural crescent shaped component with flow voids on T2 weighted imaging were found in all eleven cases.Conclusion：Cervical MRI with fully flexed position has significant values on clinical diagnosis of Hirayama disease.Atrophy and flattening of the lower cervical cord,the anterior shifting of cervical dural sac,the widened epidural space and posterior epidural crescent-shaped component with flow voids on T2 weighted imaging is of diagnostic value.

关 键 词：运动神经无疾病 颈椎 磁共振成像 

分 类 号：R744.8[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]