耳科手术导航实时报警与动态化显示系统的临床前期研究

发布时间：2018-03-10 03:09

本文选题：耳科手术导航　切入点：报警系统　出处：《临床耳鼻咽喉头颈外科杂志》2017年10期 　论文类型：期刊论文

【摘要】：目的:设计和研发一款新的导航软件,它可以向术者实时提供报警信息并且动态化重建影像学数据。方法:研究采用经典的标记点配准的方法,将固定在颅骨标本上的医用钛钉作为追踪系统定位时的标记点,配准之后,通过使用定位探针依次记录颅骨上90个标点的坐标,同时与图像中相应匹配的靶点坐标进行比对,计算靶点误差。在CT图像上将目标结构分割重建,并实时计算磨钻钻尖与目标结构之间的距离,一旦钻尖接近目标结构,系统则发出报警音。同时,通过利用改良后的体绘制技术--蒙板技术动态化重建影像学数据。结果:所有90个靶点中,最大距离误差为1.016mm,最小误差为0.427mm,平均距离误差为(0.74±0.07)mm。最终顺利完成CT图像的实时重建以及动态化显示功能的开发。结论:研究的结果证明了导航系统的精确度能够满足临床需求,同时,也展示了报警系统及动态化显示系统的可行性和其应用前景。
[Abstract]:Objective: to design and develop a new navigation software, which can provide real-time alarm information to the operator and dynamically reconstruct the imaging data. The medical titanium nail fixed on the skull specimen was used as the marking point of the tracking system. After registration, the coordinates of 90 punctuation points on the skull were recorded sequentially by using the positioning probe, and the corresponding target coordinates in the image were compared. The target error is calculated. The target structure is segmented and reconstructed on CT image, and the distance between the drill tip and the target structure is calculated in real time. Once the drill tip approaches the target structure, the system issues an alarm sound. Image data were dynamically reconstructed by using an improved volume rendering technique, the masking technique. Results: of the 90 targets, The maximum range error is 1.016 mm, the minimum error is 0.427 mm, and the average distance error is 0.74 卤0.07 mm 路mm. finally, the real-time reconstruction of CT image and the development of dynamic display function are successfully completed. Conclusion: the accuracy of the navigation system can meet the clinical requirements. At the same time, the feasibility and application prospect of alarm system and dynamic display system are also shown.
【作者单位】：中国医学科学院北京协和医学院北京协和医院耳鼻咽喉科;北京航空航天大学机械工程及自动化学院;
【基金】：国家自然科学基金(No:81570907) 国家科技支撑计划项目(No:2012BAI112B00)
【分类号】：R764.9

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