Muhle C, Wiskirchen J, Brinkmann G, Falliner A, Weinert D, Reuter M, Heller M
Christian-Albrechts-Universität zu Kiel.
Rofo. 1995 Aug;163(2):148-54. doi: 10.1055/s-2007-1015961.
To evaluate functional stenosis of the cervical spine, kinematic MRI was performed in 23 healthy volunteers and 23 patients with degenerative disease.
Kinematic MRI of the cervical spine was done from 50 degrees of inclination to 30 degrees of reclination. Depending on the maximum inclination and reclination the range of motion was divided into 9 equal angle positions. At each angle position sagittal T2* weighted gradient echo sequences were performed.
In relation to the neutral position a physiological narrowing of the ventral epidural space was seen in healthy volunteers at inclination (50 degrees) in up to 50% and respectively widening at reclination (30 degrees) in up to 10%. An increase of spinal canal stenosis or even spinal cord compression was seen at inclination in 5 patients (22%) and in 15 patients (65%) at reclination. No change of spinal canal stenosis was found in three patients (13%).
In patients with degenerative disease of the cervical spine kinematic MRI demonstrated in some patients functional spinal canal stenosis with myelon compression which was not seen in standard MRI. Therefore kinematic MR imaging can be recommended as a complementary examination in the early detection of functional myelon compression and in planning the further therapeutic work-up.
为评估颈椎的功能性狭窄，对23名健康志愿者和23名患有退行性疾病的患者进行了动态磁共振成像（kinematic MRI）检查。
对颈椎进行从50度倾斜到30度后仰的动态磁共振成像检查。根据最大倾斜度和后仰度，将活动范围分为9个等角度位置。在每个角度位置进行矢状面T2*加权梯度回波序列检查。
与中立位相比，健康志愿者在倾斜（50度）时，高达50%的人可见腹侧硬膜外间隙生理性变窄，而后仰（30度）时，高达10%的人可见硬膜外间隙增宽。5名患者（22%）在倾斜时出现椎管狭窄增加甚至脊髓受压，15名患者（65%）在后仰时出现这种情况。3名患者（13%）未发现椎管狭窄变化。
对于患有颈椎退行性疾病的患者，动态磁共振成像显示部分患者存在功能性椎管狭窄并伴有脊髓受压，而标准磁共振成像未发现这种情况。因此，动态磁共振成像可作为早期发现功能性脊髓受压及规划进一步治疗方案的补充检查手段。
