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Proceedings Paper

Electromagnetic tracker accuracy in the CyberKnife suite
Author(s): Emmanuel Wilson; Rebecca Slack; Filip Banovac; Sonja Dieterich; Hui Zhang; Kevin Cleary
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Paper Abstract

Electromagnetic trackers have found inroads into medical applications as a tool for navigation in recent years. Their susceptibility to interference from both electromagnetic and ferromagnetic sources have prompted several accuracy assessment studies in past years. To the best of our knowledge, this is the first accuracy study conducted to characterize measurement accuracy of an NDI AURORA electromagnetic tracker within a CyberKnife radiosurgery suite. CyberKnife is a frameless, stereotactic radiosurgery device used to ablate tumors within the brain, spine and in recent years, the chest and abdomen. This paper uses a data collection protocol to collect uniformly distributed data points within a subset of the AURORA measurement volume in a CyberKnife suite. The key aim of the study is to determine the extent to which large metal components of the CyberKnife stereotactic radiosurgery device and robot mount contribute to overall system performance for the AURORA electromagnetic device. A secondary goal of the work is to determine the variation in accuracy and device behavior with the presence of ionizing radiation when the LINAC is turned on.

Paper Details

Date Published: 14 March 2006
PDF: 8 pages
Proc. SPIE 6141, Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display, 61411R (14 March 2006); doi: 10.1117/12.655710
Show Author Affiliations
Emmanuel Wilson, Georgetown Univ. (United States)
Rebecca Slack, Georgetown Univ. (United States)
Filip Banovac, Georgetown Univ. (United States)
Sonja Dieterich, Georgetown Univ. Hospital (United States)
Hui Zhang, Georgetown Univ. (United States)
Kevin Cleary, Georgetown Univ. (United States)


Published in SPIE Proceedings Vol. 6141:
Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display
Kevin R. Cleary; Robert L. Galloway, Jr., Editor(s)

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