Development of navigation surgery system for vascular surgery

在血管内治疗时，x线下的导管引导图像是二维的。这不能提供任何关于深度的信息，因此，很难掌握导管尖端的方向。为了克服这个问题，我们开发了一种导航系统，可以在操作过程中提供船舶内部结构的立体视觉。我们通过开发以下三种基本技术，构建了导航系统：外科医生的视线和注视点测量方法、手术面轮廓测量方法和根据手术面轮廓显示内部结构模型的方法。通过模体检验验证了其准确性和处理速度。

Catheter guide images under X-ray during intravascular treatment are two dimensional. This does not provide any information on depth and thus, it is difficult to grasp the direction of the tip of the catheter. To overcome this problem, we have developed a navigation system that provides stereoscopic vision of the inner structure of the vessel during operation. By developing the following three basic technologies, we constructed the navigation system : surgeon's line of sight and point-of-regard measurement method, operational surface profile measurement method, and display method of Inner structure model according to operational surface profile. We verified its accuracy and processing speed by phantom examination.