Study of interaction fidelity for two viewpoint changing techniques in a virtual biopsy trainer

Virtual Reality simulators are increasingly used for training novice surgeons. However, there is currently a lack of guidelines for achieving interaction fidelity for these systems. In this paper, we present the design of two navigation techniques for a needle insertion trainer. The two techniques were analyzed using a state-of-the-art fidelity framework to determine their levels of interaction fidelity. A user study comparing both techniques suggests that the higher fidelity technique is more suited as a navigation technique for the needle insertion virtual trainer.