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Auditory feedback during frameless image-guided surgery in a phantom model and initial clinical experience.

Peter A Woerdeman1, Peter W A Willems, Herke Jan Noordmans

  • 1Department of Neurosurgery, University Medical Center Utrecht, The Netherlands. woerdeman@neuro.azu.nl

Journal of Neurosurgery
|October 22, 2008
PubMed
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Auditory feedback in image-guided surgery (IGS) improved neurosurgical decision-making and achieved high resection rates in patients. Phantom studies showed no significant impact, but auditory cues may protect eloquent brain structures.

Area of Science:

  • Neurosurgery
  • Medical Technology
  • Surgical Navigation

Background:

  • Image-guided surgery (IGS) enhances surgical precision.
  • Auditory feedback is an emerging tool to complement visual navigation in IGS.
  • Evaluating the impact of auditory feedback on surgical outcomes is crucial.

Purpose of the Study:

  • To assess the efficacy of auditory feedback during image-guided surgery.
  • To compare auditory feedback-assisted IGS with conventional methods in phantom and clinical settings.
  • To evaluate the effect of auditory feedback on instrument handling and resection quality in neurosurgery.

Main Methods:

  • Comparison of advanced IGS with auditory feedback against routine IGS (on-screen display or microscope image injection) in a phantom model.

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  • Volumetric resection assessments were used to measure outcomes in the phantom setup.
  • Clinical evaluation involved auditory feedback-assisted resection of cerebral mass lesions in 6 patients, with analysis of instrument tip speeds and surgeon feedback.

    • Main Results:

    • In phantom models, auditory feedback did not significantly alter resection quality or extent compared to routine IGS.
    • Microscope image injection resulted in significantly worse resection quality.
    • Clinical application showed auditory feedback slightly influenced instrument tip speeds but was positively received by neurosurgeons for decision-making.
    • Postoperative imaging confirmed high resection rates (>=95%) with minimal brain shift when using IGS with auditory feedback.

    Conclusions:

    • Auditory feedback in IGS may aid decision-making and potentially prevent damage to eloquent brain structures during neurosurgery.
    • While phantom results were inconclusive, clinical data suggest auditory feedback is a valuable adjunct to IGS.
    • Further research is warranted to fully elucidate the benefits of auditory feedback in complex surgical navigation.