裴欣欣,罗嗣频,万业达,王学民,周鹏.基于连续成像的颈椎运动特征[J].中国医学影像技术,2017,33(7):1090~1094 |
基于连续成像的颈椎运动特征 |
Motion characteristics of cervical spine based on continuous images |
投稿时间:2016-10-17 修订日期:2017-04-10 |
DOI:10.13929/j.1003-3289.201610065 |
中文关键词: 颈椎 动态特征 运动速率 单椎体运动 |
英文关键词:Cervical vertebral Dynamic characteristics Movement speed Single vertebral body motion |
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中文摘要: |
目的 在获取X线颈椎屈伸运动连续图像的基础上探讨颈椎的运动特征。方法 对颈椎病患者及正常人颈椎过屈位至过伸位自发连续运动的多帧矢状位X线图像进行图像预处理、配准后,记录单椎体的运动轨迹,提取各椎体的特征点,并计算出活跃椎体的相对几何学参数、运动速率。结果 患者组与正常组C4、5、6椎体动态轨迹不同。与正常组比较,过屈位时患者组C4、5椎体左侧边缘曲线与基准线的夹角较小(P均<0.05)。患者组C4椎体的运动存在不稳定性,角度变化的波动性、速率改变的幅度及频率均较大。且患者组相邻单椎体相对位置的改变更小。结论 通过本研究图像预处理、配准、参数提取及结果分析方法,可真实反映颈椎病变带来的功能学特征改变,为基于X线图像的颈椎动态特征分析提供新思路。 |
英文摘要: |
Objective To explore the motion features of cervical spine based on continuous X-ray images. Methods The cervical spontaneous continuous multi-frame sagittal images from flexion to extention positions were selected from cervical spondylosis patients (patients group) and healthy adult (normal group). After preprocessing and registration, the trajectory of single vertebral body were recorded, and the feature points of each vertebral body were extracted. Meanwhile, the relative geometry parameters and movement rate were calculated. Results The motion trajectory of patients' cervical spine C4—6 were different from healthy people. The angles between the left edge curve of the vertebral body (C4 and C5 vertebra) and the baseline of patients group were smaller than those of normal group in flexion position (all P<0.05). There were instability in the movement of C4 vertebral body in patient group, and the volatility of the angle change, the rate of change and the frequency were larger. The relative position change of the adjacent single vertebral body in the patient group are smaller. Conclusion Through the preprocessing, registration, parameter extraction and result analysis, the changes of functional features in cervical spondylosis patients are truly reflected. And it also provides a new idea for dynamic analysis of cervical vertebrae based on X-ray images. |
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