Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Comput Med Imaging Graph. 2010 Jan;34(1):46-54. doi: 10.1016/j.compmedimag.2009.07.003. Epub 2009 Aug 11.
This paper describes a precision-guided surgical navigation system for minimally invasive surgery. The system combines a laser guidance technique with a three-dimensional (3D) autostereoscopic image overlay technique. Images of surgical anatomic structures superimposed onto the patient are created by employing an animated imaging method called integral videography (IV), which can display geometrically accurate 3D autostereoscopic images and reproduce motion parallax without the need for special viewing or tracking devices. To improve the placement accuracy of surgical instruments, we integrated an image overlay system with a laser guidance system for alignment of the surgical instrument and better visualization of patient's internal structure. We fabricated a laser guidance device and mounted it on an IV image overlay device. Experimental evaluations showed that the system could guide a linear surgical instrument toward a target with an average error of 2.48 mm and standard deviation of 1.76 mm. Further improvement to the design of the laser guidance device and the patient-image registration procedure of the IV image overlay will make this system practical; its use would increase surgical accuracy and reduce invasiveness.
本文描述了一种用于微创手术的精确制导手术导航系统。该系统将激光制导技术与三维（3D）自动立体图像叠加技术相结合。通过使用称为积分摄影术（IV）的动画成像方法，可以创建叠加到患者身上的手术解剖结构图像，该方法可以显示几何上精确的 3D 自动立体图像，并再现运动视差，而无需特殊的观看或跟踪设备。为了提高手术器械的放置精度，我们将图像叠加系统与激光引导系统集成在一起，以对准手术器械并更好地可视化患者的内部结构。我们制造了一种激光引导装置，并将其安装在 IV 图像叠加装置上。实验评估表明，该系统可以引导线性手术器械以平均误差 2.48 毫米和标准差 1.76 毫米的精度对准目标。进一步改进激光引导装置的设计和 IV 图像叠加的患者图像配准过程将使该系统实用化；它的使用将提高手术精度并减少侵袭性。
