脊髓型颈椎病髓内MRI对称性T2延长病变的研究

目的　探讨脊髓型颈椎病 MRI颈髓内 2个对称性 T2 高信号影像特点。方法　临床明确诊断为脊髓型颈椎病者 17例 ,对其颈髓内两个眼样 T2 高信号 snake eye sign MRI表现进行回顾性分析。结果　位置以椎体 4 /5、5 /6各5例为最多 ,颈髓腹侧者 6例中 4例有肌力下降 ,无法判定者 5例 ,腹背均涉及者 4例。发病 6个月以内 5例。 13例以上肢症状为主诉 ,snake eye sign位置与临床神经病理检查反映的病变节段一致。结论　MRI对显示脊髓型颈椎病髓内snake eye sign有价值。

Study of Snake eye Sign on MRI of Compressive Myelopathy

Objective To explore retrospectively magnetic resonance images(MRI) of patients with cervical spondylosis and their relations with neuropathology.Methods 17 cases with "snake eye sign", who showed eye like increased signal intensity on T 2 weighed image within the cervical cord,were retrospectively analyzed.Results Most lesions were found in vertebra 4/5 and 5/6 (5 cases each).MRI performed within 6 months from the onset of symptoms presented abnormal increased signal in the spinal cord. Seventeen patients including these 13 cases symptoms presented in the upper extremities of sensory disturbance and/or muscle weakness.Four out of six patients involving in fore cervical cord were found muscles weakness.Two patients did not demonstrate long tract signs.Conclusions MRI was useful to diagnose snake eye sign of compressive myelopathy.