Image-guided endoscopic surgery: Results of accuracy and performance in a multicenter clinical study using an electromagnetic tracking system

Marvin P. Fried, Jonathan Kleefield, Harsha Gopal, Edward Reardon, Bryan T. Ho, Frederick A. Kuhn

Research output: Contribution to journalArticle

197 Scopus citations


Image-guided surgery has recently been described in the literature as a useful technology for improved functional endoscopic sinus surgery localization. Image-guided surgery yields accurate knowledge of the surgical field boundaries, allowing safer and more thorough sinus surgery. We have previously reviewed our initial experience with The InstaTrak System. This article presents a multicenter clinical study (n=55) that assesses the system's capability for localizing structures in critical surgical sites. The purpose of this paper is to present quantitative data on accuracy and performance. We describe several new advances including an automated registration technique that eliminates the redundant computed tomography scan, compensation for head movement, and the ability to use interchangeable instruments.

Original languageEnglish (US)
Pages (from-to)594-601
Number of pages8
Issue number5
StatePublished - May 1997
Externally publishedYes


ASJC Scopus subject areas

  • Otorhinolaryngology

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