Mewes André, Heinrich Florian, Kägebein Urte, Hensen Bennet, Wacker Frank, Hansen Christian
Faculty of Computer Science, Otto von Guericke University Magdeburg, Magdeburg, Germany.
Institute of Diagnostic and Interventional Radiology, Hannover Medical School, Hanover, Germany.
Int J Med Robot. 2019 Feb;15(1):e1950. doi: 10.1002/rcs.1950. Epub 2018 Sep 4.
Navigation support in interventional magnetic resonance imaging (MRI) is separated from the operating field, which makes it difficult to interpret positions and orientations and to coordinate the necessary hand movements.
We developed a projector-based augmented reality system to enable visual navigation of tracked instruments on pre-planned paths and visualization of risk structures directly on the patient inside the MRI bore. To assess the accuracy of the system, a user study was carried out with clinicians in a needle navigation test scenario.
The targets were reached with an error of 1.7 ± 0.5 mm and the entry points with an error of 1.7 ± 0.8 mm.
The accuracy results are similar to those reached by live image-guided interventions and related work and confirm that this projective augmented reality prototype for the interventional MRI can serve as a platform for current and future research in augmented reality visualization and dynamic registration.
介入式磁共振成像（MRI）中的导航支持与操作区域分离，这使得难以解释位置和方向以及协调必要的手部动作。
我们开发了一种基于投影仪的增强现实系统，以实现对跟踪仪器在预先规划路径上的视觉导航，并直接在MRI孔腔内的患者身上可视化风险结构。为评估该系统的准确性，在针导航测试场景中与临床医生进行了一项用户研究。
到达目标的误差为1.7±0.5毫米，进入点的误差为1.7±0.8毫米。
准确性结果与实时图像引导干预及相关工作所达到的结果相似，并证实这种用于介入式MRI的投影增强现实原型可作为增强现实可视化和动态配准当前及未来研究的平台。
