中文摘要：

描述 MRI 调查结果并且在脊骨以后在病人讨论 syringomyelia 的致病形成机制的目的外科的操作。完全， 13 个病人在学习被注册的方法。在手术前，任何一个都没与针的绳索 syringomyelia 我们的病人介绍。吝啬的后续持续时间由 MRI 是 6 年(范围 210 月) 。在针的绳索肿瘤以后的 13 个病人中的四个移开操作，在针的损伤操作以后的 3 个病人， 2 个盒子以前有脊柱侧凸， 2 个盒子是颈的 spondylotic myelopathy， 2 个盒子以前拴住绳索症候群操作。操作前的先生特征并且在所有病人上操作以后与外科的结果和临床的症状在对比被学习。辐射学诊断被 3 个不同放射线学者分别地做。长度，宽度，信号，洞的形状以及 subarachnoid 形状的特征上被集中。结果所有病人以前没在 MRI 上有 syringomyelia 手术。7 个病人的针的绳索出现了坚持压缩和 2 个病人以前拴住绳索操作。在在我们的情况中的操作以后的 syringomyelia 的 MRI 特征证明有鸣管液体的纵的洞有脑髓的液体(CSF ) 的 T1 和 T2 关系特征。吝啬的长度是 5.5 针的片断， 13 个病人的 4 绳索介绍了从前面的材料压缩的绳索， 4 发生了对腰部的针的运河和 1 格的针的绳索的背的手术后的粘附依附颈的针的运河的前面墙。在在针的外科的干预以后的病人的 syringomyelia 的机制可以是在操作前的时期的针的绳索的坚持的压缩或意愿的结论或操作以后。浮肿，包囊，针的绳索的 malacia 是最重要的损害，风险因素导致 syringomyelia。

英文摘要：

Objective： To describe the MRI findings and discuss the pathogenesis formation mechanism of syringomyelia in the patients after spine surgical operation. Methods： Totally 13 patients were been enrolled in the study. Before operation, none of our patients presented with spinal cord syringomyelia. The mean follow-up duration was 6 years （range 2-10 months） by MRI. Four of the 13 patients after spinal cord tumor removed operation, 3 patients after spinal trauma operation, 2 cases had scoliosis before, 2 cases were cervical spondylotic myelopathy and 2 cases had tethered cord syndrome before operation. MR features of pre- and post-operation on all patients were been studied in contrast with surgical results and clinical symptoms. The radiology diagnostic was made by 3 different radiologists respectively. The characteristics of length, width, signals, shape of cavity and spinal cord position as well as subarachnoid shape were focused on. Results： All the patients had no syringomyelia on MRI before operation. The spinal cord of 7 patients showed persist compression and 2 patients had tethered cord before operation. MRI features of syringomyelia after operation in our cases showed longitudinal cavity with syrinx fluid had T1 and T2 relation characteristics of cerebrospinal fluid （CSF）. The mean length was 5.5 spinal segment, 4 cord of 13 patients presented cord compressed from anterior materials, 4 occurred postoperative adhesion to the back of lumbar spinal canal and spinal cord of 1 cases clung to the front wall of cervical spinal canal. Conclusion： The mechanism of syringomyelia in the patients after spinal surgical intervention may be the persisting compression or intention of the spinal cord in the period of pre- or post-operation. The edema, cyst, malacia of spinal cord are the most important lesions and risk factors resulted in the syringomyelia.