颈髓与有效椎管横截面积的比值及与脊髓型颈椎病关系的研究

The relationship of CSM and the ratio of the cervical spinal cord to effective spinal canal

目的:通过对颈椎MRI中椎管面积的测量,探讨脊髓型颈椎病患者的临床表现与颈髓、椎管横截面积比值之间的关系。方法:对在我院诊治的脊髓型颈椎病130例病人进行详细问病史、查体,分为手术组和非手术组,将其MRI图像输入计算机后,用Photoshop软件对颈脊髓及椎管进行划界,对C5\6节段选定区域内的像素进行计算,求得颈髓像素与有效椎管像素的比值。同时计算患者的JOA评分,比较两者之间的关系。随机选取同年龄组65例正常C5\6图像计算比值,作为正常对照。结果:手术组C5\6节段的比值为0.603±0.0572。非手术组比值为0.332±0.056。正常对照组比值为0.305±0.072。脊髓型颈椎患者临床表现与面积比值有密切关系。结论:MRI仍然是反映椎管狭窄情况最佳的影像学诊断,C5\6节段脊髓与有效椎管横截面积比值与颈椎病的严重程度有关。

Objective：To study the relationship between the cervical spondylotic myelopathy （CSM） and the ratio of cervical spinal cord to effective spinal canal, and explore the critical standard for operation. Methods： For MRI images of 130 CSM patients, the Photoshop software was applied to calculate the ratio and analyze the critical standard. The JOA score of patients was evaluated and compared. The data of MRI images of 65 normal cases were taken as control. Results： For operation group, the ratio of cervical spinal cord to spinal canal was 0.603±0.0572 at the level of C56, as well no-operation group 0.332 ±0.056, and the normal group 0.305 ±0.072. Patients of CSM showed firmly relationship between clinic symptoms and the ratio. Conchusions： By now, MRI is most effective radiography method to evaluate GSM. The ratio of the cervical spinal cord to effective spinal canal in MRI can reflect severe degree of GSM directly.