Department of Bioengineering, Graduate School of Engineering, and Translational Systems Biology and Medicine Initiative, University of Tokyo, Tokyo 113-8656, Japan.
IEEE Trans Biomed Eng. 2010 Jun;57(6):1476-86. doi: 10.1109/TBME.2010.2040278. Epub 2010 Feb 17.
A 3-D augmented reality navigation system using autostereoscopic images was developed for MRI-guided surgery. The 3-D images are created by employing an animated autostereoscopic image, integral videography (IV), which provides geometrically accurate 3-D spatial images and reproduces motion parallax without using any supplementary eyeglasses or tracking devices. The spatially projected 3-D images are superimposed onto the surgical area and viewed via a half-silvered mirror. A fast and accurate spatial image registration method was developed for intraoperative i.v. image-guided therapy. Preliminary experiments showed that the total system error in patient-to-image registration was 0.90 +/- 0.21 mm, and the procedure time for guiding a needle toward a target was shortened by 75%. An animal experiment was also conducted to evaluate the performance of the system. The feasibility studies showed that augmented reality of the image overlay system could increase the surgical instrument placement accuracy and reduce the procedure time as a result of intuitive 3-D viewing.
开发了一种使用自动立体图像的 3-D 增强现实导航系统，用于 MRI 引导手术。通过使用动画自动立体图像、积分摄像术 (IV) 来创建 3-D 图像，它提供了几何上精确的 3-D 空间图像，并再现运动视差，而无需使用任何附加眼镜或跟踪设备。空间投影的 3-D 图像被叠加到手术区域，并通过半镀银镜进行查看。开发了一种快速准确的空间图像配准方法，用于术中静脉内图像引导治疗。初步实验表明，患者到图像配准的总系统误差为 0.90 +/- 0.21 毫米，引导针朝向目标的过程时间缩短了 75%。还进行了动物实验以评估系统的性能。可行性研究表明，图像叠加系统的增强现实可以提高手术器械放置的准确性，并通过直观的 3-D 查看减少手术时间。
