Abstract：
Surgical navigation, despite its potential benefits, faces challenges in widespread adoption in clinical practice. Possible reasons include the high cost, increased surgery time, attention shifts during surgery, and the mental task of mapping from the monitor to the patient. To address these challenges, a portable, all-in-one surgical navigation system using augmented reality (AR) was developed, and its feasibility and accuracy were investigated. The system achieves AR visualization by capturing a live video stream of the actual surgical field using a visible light camera and merging it with preoperative virtual images. A skull model with reference spheres was used to evaluate the accuracy. After registration, virtual models were overlaid on the real skull model. The discrepancies between the centres of the real spheres and the virtual model were measured to assess the AR visualization accuracy. This AR surgical navigation system demonstrated precise AR visualization, with an overall overlap error of 0.53 ± 0.21 mm. By seamlessly integrating the preoperative virtual plan with the intraoperative field of view in a single view, this novel AR navigation system could provide a feasible solution for the use of AR visualization to guide the surgeon in performing the operation as planned.
摘要：
手术导航,尽管它有潜在的好处，在临床实践中广泛采用面临挑战。可能的原因包括高成本，增加手术时间,手术期间注意力转移，以及从监护仪映射到患者的心理任务。为了应对这些挑战，一个便携式的，开发了使用增强现实（AR）的一体化手术导航系统，并对其可行性和准确性进行了研究。该系统通过使用可见光相机捕获实际手术区域的实时视频流并将其与术前虚拟图像合并来实现AR可视化。使用具有参考球的头骨模型来评估准确性。注册后,虚拟模型覆盖在真实的头骨模型上。测量真实球体中心与虚拟模型之间的差异以评估AR可视化准确性。这个AR手术导航系统展示了精确的AR可视化，总重叠误差为0.53±0.21mm。通过将术前虚拟计划与术中视野无缝集成在单个视图中，这种新颖的AR导航系统可以为使用AR可视化提供可行的解决方案，以指导外科医生按计划进行手术。
