Risk assessment of minimally invasive surgery at the otobasis

本项目的目标是根据项目第一阶段的结果开展对非线性通路的风险评估。此外，亦会考虑影响敏感建筑物受损风险的其他因素。在第一步中，将对非线性访问路径的过程进行分析和评估。将在拟议的项目中详细审查的一个方面是术前成像的不确定性。其目的是利用在项目第一阶段开发的模型来估计不同测量任务的不确定度，并推导出一组测量任务的不确定性值。此外，考虑到实际测量任务和校准体模之间的差异的不确定度贡献将被检查其对不同患者组(例如年龄或体型)的有效性。除了成像的不确定度外，还将检查钻探胶囊S控制对过程不确定度的影响以及由此对患者风险的影响。在实验中，将使用来自TP2项目的新开发的钻探太空舱以及带有校准靶标的标本。此外，还将分析实际钻探过程中的温度和不确定性。此外，还将开发针对非线性钻探路径的模具风险指数，并将用于建立基于实时的风险评估。由于需要控制非线性路径的钻井，并定期检查钻头的位置和对准，因此可以使用与计划钻井轨迹的偏差来评估过程的风险。

It is the objective of this project to develop the risk assessment for non-linear access paths based on the results of the first project phase. Further factors which influence the risk of damaging sensitive structures will be taken into account. In a first step the process of non-linear access paths will be analyzed evaluated. One aspect that will be examined in detail in the proposed project is the uncertainty of presurgical imaging. It is the object to estimate the uncertainty for different measurement tasks using the phantom developed in the first project phase and to deduce an uncertainty value for a group of measurement tasks. Furthermore, the uncertainty contribution which takes into account the difference between the real measurement task and the calibrated phantom will be examined regarding its validity for different patient groups (e.g. age or size).Besides the uncertainty of imaging, the influence of the drill capsule¿s control on the process uncertainty and therewith on the risk for the patient will be examined. For the experiments the newly developed drill capsule from project TP2 will be used as well as a specimen with calibrated targets. In addition, e.g. the temperature and the uncertainty of the actual drill process will be analyzed. Furthermore, die risk index will be developed for non-linear drill paths and will be used to establish a real-time based risk assessment. As the drilling of non-linear paths needs to be controlled and the position and alignment of the drill is checked regularly, deviations from the planned drill trajectory can be used for assessing the risk of the process.