摘要
背景:因颈椎椎弓根细小,走行方向复杂,个体变异大,椎弓根钉置入时易误伤脊髓、椎动脉及神经根,颈椎节段椎弓根螺钉固定技术的应用和推广受到限制,术前测量椎弓根螺钉置入参数的准确度有待提高。目的:应用CT三维重建技术模拟颈椎椎弓根螺钉置入,获取预植螺钉的椎弓根三维定量解剖数据及置钉参数的方法。方法:将颈椎16排CT扫描的Dicom数据导入Mimics软件和GE后处理工作站,进行颈椎三维重建和图像处理,测量在置入椎弓根螺钉情况下的置钉参数。结果与结论:应用CT三维重建技术可以获得清晰颈椎三维图像,使用软件测量功能可精确地获取预置螺钉的椎弓根管宽度、轴线长度、α及β角;在颈椎椎弓螺钉置入情况下,可测量置钉的水平角度安全范围。通过本方法可模拟手术过程,进行常规方法难以完成的三维测量,获取椎弓根螺钉置入个体化数据,为研究颈椎椎弓根螺钉置入的安全性提供了一种可靠的研究方法。
BACKGROUND：The cervical pedicle screws mistakenly inverted the cervical pedicle could lead to the many complications such as spinal cord,vertebral arteries and nerve root damage.If the parameter of inserting pedicle screws were measured accuracy,the rate of inserting pedicle screws successfully could be improved.OBJECTIVE：To get 3D anatomic parameter of inserting pedicle screws in the cervical vertebrae with the CT three-dimensional recontruction.METHODS：The Dicom data that the cervical vertebrae had been scanned by SIEMENS EMOTION 16 CT were converted into the soft Mimics 8.1,GE workstation and three-dimensional cervical vertebrae were reconstructed.The parameters of inserting cervical pedicle screws were measured with the consideration of the diameter of pedicle screw.RESULTS AND CONCLUSION：The cervical three-dimension images were reconstructed clearly with the CT three-dimensional reconstruction techniques.The cervical pedicular width,the axial length,α and β angles were measured by the soft measure function.The average inserting angular safe range of α angle was gained with the consideration of the diameter of pedicle screw.This method can mimic the operation and it is significant way in measuring the three-dimension anatomic parameter of the cervical vertebrae.The method is a good way that how to insert the cervical pedicle screw safely.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2010年第9期1555-1558,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
