A miniature optical neuronavigation system for CT-guided stereotaxy

Christopher R. Von Jako, Gabor Perlaki, Gergely Orsi, Attila Schwarcz, Tamás Dóczi

Research output: Contribution to journalArticle

1 Citation (Scopus)


Background and Objective: Neuronavigation devices have progressed over the past 2 decades, but logistical limitations remain for many stereotactic procedures. We describe our technique and accuracy for a novel miniature optical tracking system which overcomes these limitations. Method: The minioptical tracking system uses a miniature video camera mounted on a rigid cannula to determine cannula location and orientation relative to a patient-attached sticker containing reference markers. A CT scan is used to register these markers to the anatomy and a user-selected target. A computer displays the cannula guidance information to the target. Bench testing was performed on 225 targets in a custom test phantom and additional testing was performed on 20 small targets in an anthropomorphic head phantom to determine the practical accuracy and workflow. Results: The phantom study demonstrated that 3-D navigation accuracy is 1.41 ± 0.53 mm. There was a 100% head phantom study success rate for the 20 small targets. Conclusions: The resulting accuracy data demonstrated good correlation with the CT data, and the clinical simulation workflow indicated its potential usefulness for common neurosurgical applications. Furthermore, this small-footprint tracking technology does not experience the traditional environmentally induced issues or the requirement of pin-based head fixation, allowing for use in the neurointensive care unit and the emergency department.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalStereotactic and Functional Neurosurgery
Issue number1
Publication statusPublished - Jan 1 2014


  • Frameless stereotaxy
  • Image-guided neurosurgery
  • Intraoperative imaging
  • Neuronavigation

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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