中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (30): 5564-5567.doi: 10.3969/j.issn.1673-8225.2010.30.014

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

颈椎弓根周围神经组织MRI的指标测量及临床意义

周  山   

  1. 漯河医学高等专科学校第二附属医院放射科，河南省漯河市 462000
  • 出版日期:2010-07-23 发布日期:2010-07-23
  • 作者简介:周 山★，男，1967年生，河南省信阳市人，汉族，2002年郑州大学毕业，硕士，副主任医师，副教授，主要从事影像诊断的研究。 zhoushanmri@163.com

MRI measurement and clinical value of nervous tissues surrounding the cervical vertebral pedicle

Zhou Shan   

  1. Department of Radiology, Second Affiliated Hospital, Luohe College, Luohe  462000, Henan Province, China
  • Online:2010-07-23 Published:2010-07-23
  • About author:Zhou Shan★, Master, Associate chief physician, Associate professor, Department of Radiology, Second Affiliated Hospital, Luohe College, Luohe 462000, Henan Province, China zhoushanmri@163.com

PDF

419

被引次数

7

摘要：

背景：在颈椎内固定方法中，经椎弓根固定的稳定性最强，由于椎弓根周围紧密伴随着椎动脉、脊髓、硬膜囊和神经等重要组织，损伤这些组织的结果是危险或致命的，颈椎椎弓根螺钉固定技术的应用和推广受到限制，MRI有较高的软组织分辨率，可以作为颈椎弓根周围神经组织研究的有益检查手段。
目的：评价MRI测量颈椎椎弓根周围神经组织在颈椎弓根内固定的临床意义。
方法：随机选择62例健康受检者行颈段MRI扫描后进行测量与观察。测量指标包括7项：椎管矢径、椎管横径、椎孔指数、脊髓矢径、脊髓横径、椎弓根与上位神经根的距离和椎弓根与下位神经根的距离。
结果与结论：椎管矢径从C1~C4下降速度比较快，从C3~C7呈缓慢上升状态。椎管横径C1~C2明显下降，C3~C7上升趋势缓慢且明显，C1最大，在C2最小。脊髓矢径和横径在C5和C6都有明显增大。椎弓根与上位神经根的距离明显小于与下位神经根的距离。提示通过MRI测量可较好显示颈椎椎弓根周围神经组织的影像特征，为颈椎弓根内安全置钉提供参考。

关键词: 颈椎, 椎弓根, 神经组织, MRI, 测量

Abstract:

BACKGROUND: In internal fixation methods of the cervical vertebrae, the stability of vertebral pedicle fixation was strongest. The vertebral pedicle is surrounded by vertebral artery, spinal cord, dural sac and nerve. Damages to above-described tissues are dangerous or fateful. Thus, the application and generalization of vertebral pedicle screw fixation techniques are limited. Magnetic resonance imaging (MRI) has high resolution of soft tissue, and can be used as a beneficial method for studying nervous tissues surrounding cervical vertebral pedicle.
OBJECTIVE: To evaluate clinical significances in transpedicular screw fixation with MRI measurement of cervical vertebral pedicle adjacent neural structure.
METHODS: The cervical segment of 62 health adult examples had been scanned by MRI. The measurement indexes included 7 items: the radius vector of vertebral canal, the transverse diameter of vertebral canal, the exponent of vertebral foramen, radius vector of spinal cord, the transverse diameter of spinal cord, the distance of pedicle to superior nerve root, and the distance of pedicle to inferior nerve root.
RESULTS AND CONCLUSION: Radius vector of vertebral canal decreased fast from C1 to C4 and increased slowly from C3 to C7. From C1 to C2, transverse diameter of vertebral canal significantly decreased, whereas from C3 to C7, it increased slowly. Transverse diameter of vertebral canal of C1 was biggest, but that of C2 was smallest. Radius vector of spinal cord and transverse diameter of spinal cord had a clear increase in C5 and C6. The distance of pedicle to superior nerve root was smaller than the distance of pedicle to inferior nerve root. These indicated that MRI can reveal the imaging features of cervical pedicle adjacent neural structure clearly and provide radiology data for transpedicular screw fixation.

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