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Shukla, Gaurav (Author), Klatzky, Roberta L. (Author), Wu, Bing (ASU author), Wang, Bo (Author), Galeotti, John (Author), Chapmann, Brian (Author), Stetten, George (Author), Arizona State University. New College of Interdisciplinary Arts and Sciences. School of Mathematical and Natural Sciences


This paper describes a novel method for displaying data obtained by three-dimensional medical imaging, by which the position and orientation of a freely movable screen are optically tracked and used in real time to select the current slice from the data set for presentation. With this method, which we call a “freely moving in-situ medical image”, the screen and imaged data are registered to a common coordinate system in space external to the user, at adjustable scale, and are available for free exploration. The three-dimensional image data occupy empty space, as if an invisible patient is being sliced by the moving screen. A behavioral study using real computed tomography lung vessel data established the superiority of the in situ display over a control condition with the same free exploration, but displaying data on a fixed screen (ex situ), with respect to accuracy in the task of tracing along a vessel and reporting spatial relations between vessel structures. A “freely moving in-situ medical image” display appears from these measures to promote spatial navigation and understanding of medical data., The electronic version of this article is the complete one and can be found online at:



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Arizona State University

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