基于连续成像的颈椎运动特征

发布时间：2018-03-17 15:21

本文选题：颈椎　切入点：动态特征　出处：《中国医学影像技术》2017年07期 　论文类型：期刊论文

【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。
[Abstract]:Objective to investigate the motion characteristics of cervical vertebrae on the basis of continuous radiographic images of flexion and extension of cervical vertebrae. Methods Multi-frame sagittal images of spontaneous continuous motion of cervical vertebrae in patients with cervical spondylosis and normal subjects were preprocessed. After registration, the motion trajectories of single vertebrae were recorded, the characteristic points of each vertebra were extracted, and the relative geometric parameters and motion rate of active vertebrae were calculated. The angle between the left edge curve and datum line of C _ 4N _ 5 vertebrae in the patients group was lower than that in the control group (P < 0.05). The motion of C _ 4 vertebrae in the patient group was unstable and the change of the angle was fluctuating. The amplitude and frequency of the rate change were larger, and the relative position of adjacent single vertebrae in the patient group was much smaller. Conclusion the method of image preprocessing, registration, parameter extraction and result analysis is used in this study. It can truly reflect the changes of functional features caused by cervical spondylosis, and provide a new idea for the analysis of cervical spine dynamic characteristics based on X-ray images.
【作者单位】：天津大学精密仪器与光电子工程学院;天津医院放射科;天津市生物医学检测技术与仪器重点实验室;
【分类号】：R681.55;R816.8

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