Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China.
Int J Med Robot. 2022 Aug;18(4):e2404. doi: 10.1002/rcs.2404. Epub 2022 Apr 15.
Oral and maxillofacial surgery demands high precision navigation to achieve optimal surgical outcomes. Augmented reality (AR) has been a promising solution for intuitive and accurate guidance, whereas existing systems have room for improvement.
We propose a high quality and accurate in situ AR navigation system. Enhanced image quality is achieved by deploying eye tracking in lenticular-based autostereoscopic display. Viewpoint tracking and optical tracking are integrated to assure accurate in situ images.
The proposed system can provide in situ AR images in real-time, with a viewing angle of 59.5° × 49.1°, 3D image resolution of 0.35 × 0.21 mm, and image accuracy of 0.99 ± 0.70 mm. A maxillary drilling experiment obtains average position error of 1.12 ± 0.30 mm and localization time of 8.7 ± 3.9 s, significantly better than conventional 2D navigation system.
The proposed system can display high-quality AR images and therefore reduce positioning error and operating time.
口腔颌面外科需要高精度的导航来实现最佳的手术效果。增强现实（AR）技术为直观、准确的引导提供了一种很有前途的解决方案，而现有系统仍有改进的空间。
我们提出了一种高质量、精确的原位 AR 导航系统。通过在基于透镜的自动立体显示中部署眼动追踪，实现了更高的图像质量。视点跟踪和光学跟踪相结合，以确保原位图像的准确性。
该系统可以实时提供原位 AR 图像，视角为 59.5°×49.1°，3D 图像分辨率为 0.35×0.21 毫米，图像精度为 0.99±0.70 毫米。上颌钻孔实验得到的平均位置误差为 1.12±0.30 毫米，定位时间为 8.7±3.9 秒，明显优于传统的 2D 导航系统。
该系统可以显示高质量的 AR 图像，从而减少定位误差和操作时间。
