VISLAN: Combining Intra-Operative Video and Pre-Operative Images for Surgical Guidance

Applications of Computer Vision in Medical Image Processing

Volume

Papers from the 1994 AAAI Spring Symposium

Contents

In order to approach his target safely and accurately a surgeon needs to relate information derived from preoperative images to the live patient in theatre, and he also needs to integrate intra-operative imaging information (video, ultrasound etc) to update his surgical plan. We are developing a novel frameless stereotactic system (P'/$LAN) which uses v~ible landmarks, for registering data obtained pre-operatively (the pre-operative patient representation or POPR) to data obtained from stereo video imaging in theatre (the intra-operative patient representation or IOPR). An important component of the system is a hand-held pointing device (locater), without mechanical electrical linkages, which can be tracked by the stereo video system.