Allmann K H, Uhl M, Uhrmeister P, Neumann K, von Kempis J, Langer M
Department of Diagnostic Radiology, University Hospital, Freiburg, Germany.
Acta Radiol. 1998 Sep;39(5):543-6. doi: 10.1080/02841859809172222.
To evaluate functional MR imaging in patients with rheumatoid arthritis (RA) involving the cervical spine.
We used a device that allows MR examination to be made of the cervical spine in infinitely variable degrees of flexion and extension. Dynamic functional MR imaging was performed on 25 patients with RA.
Functional MR imaging was able to show the degree of vertebral instability of the occipito-atlantal or atlanto-axial level as well as the subaxial level. By performing functional MR imaging, we were able to demonstrate the extent of synovial tissue around the dens, and the impingement and displacement of the spinal cord during flexion and extension. The basilar impression, the cord impingement into the foramen magnum, the cord compression, the slipping of vertebrae, and the angulation of the cord were all much more evident in functional than in static MR imaging.
Functional MR imaging provided additional information in patients with RA, and is valuable in patients who have a normal MR study in the neutral position and yet have signs of a neurological deficit. Functional MR imaging is important in the planning of stabilizing operations of the cervical spine.
评估类风湿关节炎（RA）累及颈椎患者的功能磁共振成像。
我们使用了一种能在颈椎进行无限可变屈伸度磁共振检查的设备。对25例RA患者进行了动态功能磁共振成像。
功能磁共振成像能够显示枕寰或寰枢水平以及下颈椎水平的椎体不稳定程度。通过进行功能磁共振成像，我们能够显示齿突周围滑膜组织的范围，以及屈伸过程中脊髓的受压和移位情况。在功能磁共振成像中，基底凹陷、脊髓向枕骨大孔内的受压、脊髓受压、椎体滑脱以及脊髓成角情况均比静态磁共振成像更为明显。
功能磁共振成像为RA患者提供了额外信息，对于中立位磁共振检查正常但有神经功能缺损体征的患者具有重要价值。功能磁共振成像在颈椎稳定手术的规划中具有重要意义。
