平山病颈椎MRI影像学分析  

Magnetic resonance imaging for the diagnosis of Hirayama disease

作　　者：翟少智[1] 代海洋[1] 刘国荣[1] 肖叶玉[2] 洪璧楷[2] 吴仁华[2] 

机构地区：[1]广东省惠州市中心人民医院放射科,惠州5160012 [2]汕头大学医学院第二附属医院放射科,汕头515041

出　　处：《磁共振成像》2013年第4期276-279,共4页Chinese Journal of Magnetic Resonance Imaging

摘　　要：目的探讨平山病患者自然位和过屈位时颈椎MRI影像学表现及过屈位脊膜后间隙大小对平山病诊断价值。材料与方法对9例临床确诊为平山病患者和10名健康志愿者行自然位和过屈位MR扫描,观察其影像学表现,测量过屈位平山病和对照组脊膜后间隙大小。结果自然位平山病患者颈椎曲度异常,低位脊髓出现萎缩、扁平。过屈位时颈髓前移、变扁,脊膜后间隙出现异常信号,增强后显著强化。平山病和对照组过屈位脊膜后间隙分别为(6.8±0.5 mm)和(4.2±0.4)mm,差异有统计学意义(P<0.01)。结论平山病患者过屈位颈椎脊膜后间隙增宽并见异常信号,结合自然位和过屈位MRI影像学特点可协助诊断。Objective： To investigate the MRI characteristic of the spinal cord in neutral position and fully flexed position of the neck,and to analyze diagnostic value of the subdural space in fully flexed position.Materials and Methods： MRI examinations in neutral neck position and a fully flexed neck position were performed in 9 cases of Hirayama disease and 10 normal control subjects.The MRI features of Hirayama were analyzed and the subdural spaces in the fully flexed position were measured in the patients and control groups.Results： In the neutral position,the cervical curvature become straighten lower cervical cord become atrophy and flattening for the patient group.In a fully flexed position,the patient group showed forward displacement and flattening of the lower cervical cord.There was a crescentshaped abnormal signal in the subdural space and showed significant enhancement after contrast medium administration.The subdural space between the patients（6.8±0.5） mm and control（4.2±0.4） mm respectively and showed significant difference（P0.01）.Conclusions： The subdural space,which was broadened and seen abnormal signals in a fully flexed position,have a certain value combined with neutral and fully flexed position MR features in the diagnosis of Hirayama.

关 键 词：平山病 磁共振成像 颈椎 过屈位 

分 类 号：R445.2[医药卫生—影像医学与核医学] R737.11[医药卫生—诊断学]