Application of Quaternion in Surgery Navigation System

It was discovered that quaternion can be used in surgery navigation system (SNS), as an alternative and compact way to represent rotations. Coordinates conversion must be included when localizing in different coordinate. The application of quaternion in SNS coordinates conversion and the application of space registration in SNS are theoretically introduced in detail. The result of simulation shows that special localization and registration are solved successfully using quaternion method. The two key technologies are used successfully in our NEU-IGSS which is designed and developed by ourselves.