<title>Real-time 3D-image-guided navigation system based on integral videography</title>

Abstract

A surgical navigation system that utilizes real-time three-dimensional (3D) image was developed. It superimposes the real, intuitive 3D image for medical diagnosis and operation. This system creates 3D image based on the principle of integral photography (IP), which can display geometrically accurate 3D autostereoscopic images and reproduce motion parallax without any need of special devices. We developed a new method for creating 3D autostereoscopic image, named Integral Videography (IV), which can also display moving 3D object. Thus the displayed image can be updated following the changes in surgeon's field of vision during the operation. 3D image was superimposed on the surgical fields in the patient via a half-silvered mirror as if they could be seen through the body. In addition, a real-time Integral Videography algorithm for calculating the 3D image of surgical instruments was used for registration between the location of surgical instruments and the organ during the operation. The experimental results of targeting point location and avoiding critical area showed the errors of this navigation system were in the range of 2-3mm. By introducing a display device with higher pixel density, accuracy of the system can be improved. Because of the simplicity and the accuracy of real-time projected point location, this system will be practically usable in the medical field.© (2002) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.