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Proceedings Paper

Interactive modeling and simulation of peripheral nerve cords in virtual environments
Author(s): Sebastian Ullrich; Thorsten Frommen; Jan Eckert; Astrid Schütz; Wei Liao; Thomas M. Deserno; Alexandre Ntouba; Rolf Rossaint; Andreas Prescher; Torsten Kuhlen
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Paper Abstract

This paper contributes to modeling, simulation and visualization of peripheral nerve cords. Until now, only sparse datasets of nerve cords can be found. In addition, this data has not yet been used in simulators, because it is only static. To build up a more flexible anatomical structure of peripheral nerve cords, we propose a hierarchical tree data structure where each node represents a nerve branch. The shape of the nerve segments itself is approximated by spline curves. Interactive modeling allows for the creation and editing of control points which are used for branching nerve sections, calculating spline curves and editing spline representations via cross sections. Furthermore, the control points can be attached to different anatomic structures. Through this approach, nerve cords deform in accordance to the movement of the connected structures, e.g., muscles or bones. As a result, we have developed an intuitive modeling system that runs on desktop computers and in immersive environments. It allows anatomical experts to create movable peripheral nerve cords for articulated virtual humanoids. Direct feedback of changes induced by movement or deformation is achieved by visualization in real-time. The techniques and the resulting data are already used for medical simulators.

Paper Details

Date Published: 17 March 2008
PDF: 8 pages
Proc. SPIE 6918, Medical Imaging 2008: Visualization, Image-Guided Procedures, and Modeling, 69182J (17 March 2008); doi: 10.1117/12.770354
Show Author Affiliations
Sebastian Ullrich, RWTH Aachen Univ. (Germany)
Thorsten Frommen, RWTH Aachen Univ. (Germany)
Jan Eckert, RWTH Aachen Univ. (Germany)
Astrid Schütz, RWTH Aachen Univ. (Germany)
Wei Liao, RWTH Aachen Univ. (Germany)
Thomas M. Deserno, RWTH Aachen Univ. (Germany)
Alexandre Ntouba, Univ. Hospital Aachen (Germany)
Rolf Rossaint, Univ. Hospital Aachen (Germany)
Andreas Prescher, Univ. Hospital Aachen (Germany)
Torsten Kuhlen, RWTH Aachen Univ. (Germany)

Published in SPIE Proceedings Vol. 6918:
Medical Imaging 2008: Visualization, Image-Guided Procedures, and Modeling
Michael I. Miga; Kevin Robert Cleary, Editor(s)

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