颈椎动态MRI评估颈椎椎管变化  

Kinematic MRI evaluation on the correlated changes of vertebral canal of cervical spine

作　　者：张芳[1] 张媛[1] 高树明[1] 李大胜[1] 牛学明 刘涛[1] 顾金祥 屈辉[2] 

机构地区：[1]北京市海淀医院放射科,100080 [2]北京积水潭医院放射科

出　　处：《中华放射学杂志》2007年第9期956-958,共3页Chinese Journal of Radiology

摘　　要：目的采用颈椎动态 MR 扫描,观察椎间隙水平硬膜囊前后径(DSD)的变化,了解活动状态下各退变因素对椎管的影响。方法对临床拟诊颈椎管狭窄的35例患者行中立位及不同伸屈角度矢状面T_2WI,测量 DSD,对测量结果进行统计学分析。结果与中立位相比较,35例患者小角度前屈致 DSD 减小者8例,大角度前屈致 DSD 减小者9例,后伸位致 DSD 减小者28例。其中,后伸位及中立位 DSD 在 C2～3节段分别为(10.1±1.1)mm 和(10.8±1.0)mm(t=2.970,P<0.05),在 C3～4节段分别为(8.8±1.2)mm 和(9.2±1.2)mm(t=4.636,P<0.05),在 C4～5节段分别为(7.8±1.5)mm 和(8.1±1.5)mm (t=3.641,P<0.05),差异具有统计学意义。结论颈椎动态 MR 检查有利于反映颈椎退变因素所导致的椎管狭窄和脊髓压迫的真卖隋况,后伸位可作为首选补充检查。Objective To study the changes of degeneration structure and vertebral canal of cervical spine （C-spine） by kinematics MRI. Methods On 3. 0 T MR scanner, 35 patients of vertebral canal stenosis diagnosed by static scan were examined by motion scanning including different angle of c-spine using sagittal T2 WI and the sagittal diameter of Dura Sac （DSD） were measured. Results Small, large angle flexion and extension location caused DSD decrease in 8, 9, 28 cases, respectively. DSD of extension and neutral position on C2-3, C3-4 and C4-5 were （ 10. 1±1.1 ） mm, （ 10. 8±1.0） mm ; （ 8. 8±1.2 ） mm, （ 9. 2±1.2 ） mm; （7.8±1.5 ） mm, （ 8. 1 ±1.5 ） mm, respectively. DSD of extension position were decreased than of neutral position on those locations, the difference was significant （ C2-3 ： t = 2. 970, P 〈 0.05 ; C3-4 ： t=4.636,P〈0.05; C4-5：t =3.641,P〈0.05）. Conclusion Kinematics MRI is helpful on discovering the real state of stenosis of vertebral canal and spinal compression due to the changes the degeneration structure. Extension position can be the preferred supplement of routine MRI scans.

关 键 词：颈椎病 椎管狭窄 磁共振成像 

分 类 号：R681.5[医药卫生—骨科学] R445.2[医药卫生—外科学]