Designing for Spatial Orientation in Endoscopic Environments

Abstract

Disorientation or “getting lost” in colonoscopy is common experience even for expert endoscopists. This paper describes a new navigational aid display concept for colonoscopy and presents results of an experiment conducted to evaluate the usefulness of various types of spatial information for supporting navigation and spatial orientation in colonoscopy. Six combinations of 1) direction, 2) location, and 3) shape information were tested. Results show that even though the new navigational aid display concept did not improve navigation performance, spatial orientation error and workload were reduced significantly. This new navigational aid display which provides shape combined with location and direction information in a perspective view and in real time is a useful tool for colonoscopy.

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