平山病磁共振成像诊断价值  

Natural position and flexion-extension MRI diagnostic value in Hirayama disease [

作　　者：董悦[1] 王宏[1] 董玉茹[1] 钟心[1] 穆学涛[1] 

机构地区：[1]中国人民武装警察部队总医院磁共振科,北京100039

出　　处：《中国急救复苏与灾害医学杂志》2012年第11期1028-1030,共3页China Journal of Emergency Resuscitation and Disaster Medicine

摘　　要：目的探讨颈椎自然位及过屈位磁共振成像对平山病的诊断价值。方法对10例临床证实的平山病患者行颈椎自然位和过屈位磁共振平扫及7例增强扫描。结果自然位MR扫描，10例均有C-C7段脊髓轻度萎缩，前后径变短，过屈位扫描，10例患者均累及颈5、6椎体平面；可见颈髓前移、变扁；硬脊膜向前移位，硬脊膜外腔增宽，硬脊膜后静脉丛扩张见新月形或梭形等T1等T2信号，1例患者可见硬膜外腔内流空血管影，1例患者见颈髓灰质内条状稍长T1、稍长T2异常信号影，横轴面示异常信号主要位于灰质前角。7例在增强扫描中均可见不同程度的硬膜后间隙内异常强化影。结论平山病患者在过屈位时颈髓及硬膜外腔的异常表现极具特征性，因此MRI过屈位平扫及增强扫描对平山病诊断具有重要价值。Objective To evaluate the cervical natural position and flexion-extension MRI diagnostic value in Hirayama disease. Methods 10 patients who were diagnosed Hirayama disease were performed cervical natural position MRI, and 7 of them were additionally performed contrast-enhancement MRI scan in natural position and flexion-extension. Results In the natural position MRI scan, the mild atrophy C5-C7 spinal cords and short tanteroposterior diameter of vertebral body were found in all 10 cases. In the flexion-extension MRI scan, shifted forward C-spinal and broadened epidural cavity were also found in the 10 cases, including one case of blood vessels with flow-void effect in the epidural cavity, one case of abnormal signal within fore horn of the gray matter in the cervical cord. In the contrast MRI scan, 7 cases showed different degrees enhancement in the back of epidural cavity. Conclusion The features of the C-spinal and epidural cavity reflect obvious in flexion-extension and contrast-enhancement MRI of Hirayama disease.

关 键 词：平山病 磁共振成像 诊断 

分 类 号：R445[医药卫生—影像医学与核医学]