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视觉指导手术导航使用计算机视觉进行动态手术内成像更新
Jeremy Ruthberg1, Nicole Gunderson2, Pengcheng Chen2
1Department of Otolaryngology-Head and Neck Surgery, University of Washington, Seattle, Washington, USA.
International forum of allergy & rhinology
|August 23, 2025
概括
这项研究引入了一种使用神经辐射场 (NeRF) 创建实时3D手术场重建的新方法,从而提高了内镜手术 (ESS) 的准确性. 这项技术可实现动态手术内成像,以提高手术完整性.
科学领域:
- 医学成像
- 计算机视觉
- 手术技术
背景情况:
- 在内镜手术 (ESS) 后的残留疾病导致不良结果和重复手术.
- 目前的图像指导手术系统缺乏动态的手术内更新.
- 建议使用神经辐射场 (NeRF) 进行手术内CT更新的无传感器视频方法.
研究的目的:
- 开发和验证使用NeRF进行动态手术内CT更新的新方法.
- 与手术前CT扫描相比,评估NeRF生成的3D外科现场重建的准确性.
- 评估这项技术在ESS中提高外科完整性的潜力.
主要方法:
- 在3D打印模型上进行双边ESS.
- 用自定义的NeRF管道处理内镜视频进行3D重建.
- 使用Hausdorff距离,DSC和BAA,将NeRF重建与手术前的CT扫描共同记录,并生成更新的CT模型并与手术后的CT进行比较.
主要成果:
- 通过0.27 ± 0.076 mm的平均豪斯多夫距离实现了亚毫米表面对齐.
- 通过0.93±0.012的子相似系数 (DSC) 证明了极好的体积重叠.
- 布兰德-阿尔特曼分析显示了可接受的体积协议,平均差异为0.40cm3.
结论:
- 计算机视觉,特别是NeRF,可以通过内镜视频进行准确,动态的CT更新,而不需要外部跟踪.
- 这种软件驱动的工具可视化切除的进展,有可能提高ESS手术的完整性.
- 这项技术为下一代外科导航平台提供了途径.
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