背景:目前的工作介绍了SpineST-01系统,图像引导的椎骨插管训练系统。在任务执行期间,计算机计算基于性能的指标,显示不同的视觉视角(LV,AV,APV)与仪器在其内部的位置。最后,生成包含指标的报告作为性能反馈。
方法:训练盒容纳3D打印的脊柱部分。计算机与两个正交设置的摄像机一起工作,跟踪放置在仪器上的被动标记。提出了八个指标来评估手术任务的执行性能。初步研究,25名参与者分为三组:12名新手,10个中间体和3个专家,进行,以确定该系统的可行性,以使用Kruskal-Wallis分析和UMann-Whitney评估和评估每个组的性能差异。在两者中,Kruskal-Wallis分析和UMann-Whitney,p值≤0.05被认为具有统计学意义.
结果:在比较专家与新手和三组时,统计学分析显示,8项指标中有6项存在显著差异.(轴向角度误差(°),横向角度误差(°),平均速度(mm/s),镜头之间的进度(mm),时间(s),Shots)Themetricsthatdidnotshowanystatisticalsignificantdifferenceweretimebetweenshots(s),和射击之间的速度(mm/s)。平均结果比较也将专家列为最佳绩效组。
结论:在SpineST-01演示文稿中,初步测试表明,该系统具有在腰椎上进行图像引导插管任务的潜力。结果显示专家之间的客观差异,中间体,以及拟议指标的新手。使该系统成为开发基本导航系统技能的可行选择,没有辐射暴露的风险,并客观评估任务绩效。
BACKGROUND: The SpineST-01 system is an image-guided vertebrae cannulation training system. During task execution, the computer calculates performance-based metrics displaying different visual perspectives (lateral view, axial view, anteroposterior view) with the position of the instrument inside the vertebra. Finally, a report with the metrics is generated as performance feedback.
METHODS: A training box holds a 3D printed spine section. The computer works with 2 orthogonally disposed cameras, tracking passive markers placed on the instrument. Eight metrics were proposed to evaluate the execution of the surgical task. A preliminary study with 25 participants divided into 3 groups (12 novices, 10 intermediates, and 3 expert) was conducted to determine the feasibility of the system and to evaluate and assess the performance differences of each group using Kruskal-Wallis analysis and Mann-Whitney U analysis. In both analyses, a P value ≤ 0.05 was considered statistically significant.
RESULTS: When comparing experts versus novices and all 3 groups, statistical analysis showed significant differences in 6 of the 8 metrics: axial angle error (°), lateral angle error (°), average speed (mm/second), progress between shots (mm), Time (seconds), and shots. The metrics that did not show any statistically significant difference were time between shots (seconds), and speed between shots (mm/second). Also, the average result comparison placed the experts as the best performance group.
CONCLUSIONS: Initial testing of the SpineST-01 demonstrated potential for the system to practice image-guided cannulation tasks on lumbar vertebrae. Results showed objective differences between experts, intermediates, and novices in the proposed metrics, making this system a feasible option for developing basic navigation system skills without the risk of radiation exposure and objectively evaluating task performance.