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Proceedings Paper

A buyer's guide to electromagnetic tracking systems for clinical applications
Author(s): Emmanuel Wilson; Ziv Yaniv; David Lindisch; Kevin Cleary
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Paper Abstract

When choosing an Electromagnetic Tracking System (EMTS) for image-guided procedures, it is desirable for the system to be usable for different procedures and environments. Several factors influence this choice. To date, the only factors that have been studied extensively, are the accuracy and the susceptibility of electromagnetic tracking systems to distortions caused by ferromagnetic materials. In this paper we provide a holistic overview of the factors that should be taken into account when choosing an EMTS. These factors include: the system's refresh rate, the number of sensors that need to be tracked, the size of the navigated region, system interaction with the environment, can the sensors be embedded into the tools and provide the desired transformation data, and tracking accuracy and robustness. We evaluate the Aurora EMTS (Northern Digital Inc., Waterloo, Ontario, Canada) and the 3D Guidance EMTS with the flat-panel and the short-range field generators (Ascension Technology Corp., Burlington, Vermont, USA) in three clinical environments. We show that these systems are applicable to specific procedures or in specific environments, but that, no single system is currently optimal for all environments and procedures we evaluated.

Paper Details

Date Published: 17 March 2008
PDF: 12 pages
Proc. SPIE 6918, Medical Imaging 2008: Visualization, Image-Guided Procedures, and Modeling, 69182B (17 March 2008); doi: 10.1117/12.770509
Show Author Affiliations
Emmanuel Wilson, Georgetown Univ. Medical Ctr. (United States)
Ziv Yaniv, Georgetown Univ. Medical Ctr. (United States)
David Lindisch, Georgetown Univ. Medical Ctr. (United States)
Kevin Cleary, Georgetown Univ. Medical Ctr. (United States)

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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