光谱学与光谱分析, 2016, 36 (4): 972, 网络出版: 2016-12-20  

联合近红外参数与CT影像的椎弓根螺钉监测方法

Real-Time Monitoring Method for Pedicle Screw Fixation Surgery Based on Near-Infrared Spectrum and Computer Tomography Images
作者单位
南京航空航天大学生物医学工程系, 江苏 南京 210016
摘要
脊柱的治疗非常重要, 其中螺钉的准确植入是其内固定术的一个重要影响因素。 但由于椎骨外形差异较大, 很容易在螺钉植入过程中出现误植, 从而引起并发症。 因此, 需要寻找一种准确的椎弓根螺钉植入检测与监测方法。 提出了一种联合近红外参数和CT影像方法, 该方法可应用于椎弓根螺钉的植入过程中, 将计划植钉路径上椎骨组织的近红外参数和CT值进行研究, 提高术中植钉的准确率。 首先以猪椎骨为实验模型, 规划手术中的典型螺钉植入路径; 然后采用相关系统测量植入针道上的光谱, 计算光谱分析得到最佳近红外参数, 将其定义为特征因子; 进一步将规划路径上的CT值与特征因子进行关联, 建立三维空间CT值与近红外参数的转换模型。 结果表明CT值与特征因子具有线性关系, 为椎弓根螺钉植钉手术中的螺钉位置实时监测提供了参考依据, 该模型可以用于螺钉植入术中监测和误植预警。 论文提出的联合近红外参数和CT影像的椎弓根螺钉植入术中监测方法, 为临床手术中植钉准确率的提高奠定了基础。
Abstract
Spine is one of the most important organs in the human body. One of the most commonly used method for the treatment of spinal diseases is the internal fixation and accurate placement of pedicle screw, which is a key factor of spinal surgery. However, due to the large differences as to the appearance of pedicles, it is hard to place the pedicle screw precisely, which will cause complication. Therefore, to find a new real-time intra-operative monitoring method with navigation is the direction of clinical application research. In this paper, a new method was firstly proposed. This method combined computer tomography (CT) values and near-infrared spectroscopy (NIRs) measurement data to guide the PS placement, and the relationship between NIRs parameters and CT values along the PS trajectory in vertebrae was investigated. First, we took pig vertebrae as samples and different puncture paths were planned. Second, a near-infrared monitoring device was utilized in experiments of fresh pig vertebrae to acquire the best NIRs monitoring pattern factors. Finally, the correlation function between NIRs data and CT values pattern factors was obtained. The results showed that CT values have a linear relationship with NIRs monitoring pattern factors, which provide references for real-time monitoring method in pedicle screw fixation surgery. This model can be applied in monitoring the pedicle screw implantation and alarming. The proposed method will be potential in improving the accuracy of PS placement and reduce the risk caused by the misplacement of pedicle screw.

刘洋洋, 王钰妍, 高慧, 钱志余, 谢捷如, 李韪韬. 联合近红外参数与CT影像的椎弓根螺钉监测方法[J]. 光谱学与光谱分析, 2016, 36(4): 972. LIU Yang-yang, WANG Yu-yan, GAO Hui, QIAN Zhi-yu, XIE Jie-ru, LI Wei-tao. Real-Time Monitoring Method for Pedicle Screw Fixation Surgery Based on Near-Infrared Spectrum and Computer Tomography Images[J]. Spectroscopy and Spectral Analysis, 2016, 36(4): 972.

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