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Accuracy Validation of Neuronavigation Comparing Headholder-Based System with Head-Mounted Array-A Cadaveric Study.

Daniel Pinggera1, Johannes Kerschbaumer2, Marlies Bauer2

  • 1Department of Neurosurgery, Medical University of Innsbruck, Innsbruck, Austria; Division of Clinical and Functional Anatomy, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Innsbruck, Austria.

World Neurosurgery
|August 26, 2018
PubMed
Summary
This summary is machine-generated.

A head-mounted reference array for neuronavigation shows accuracy comparable to the standard headholder-based system. This head-mounted system can be used in neurosurgery without compromising navigation accuracy, provided careful registration is performed.

Keywords:
AccuracyHead-mountedNeuronavigationReference array

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Area of Science:

  • Neurosurgery
  • Medical Devices
  • Surgical Navigation

Background:

  • Neuronavigation systems are crucial for intracranial neurosurgery.
  • Traditional systems use a reference array fixed to a headholder.
  • Alternative head-mounted reference arrays offer potential advantages in specific surgical scenarios.

Purpose of the Study:

  • To compare the operational accuracy of a head-mounted reference array against the standard headholder-based neuronavigation system.
  • To evaluate the feasibility and precision of head-mounted arrays in cadaveric models.

Main Methods:

  • 10 cadaveric specimens were used, each with 8 titanium microscrews as reference points.
  • Computed tomography (CT) scans were acquired for each specimen.
  • Registration was performed using surface matching with an infrared laser on 3D reconstructed CT data.
  • Both head-mounted and headholder-based systems were assessed through 10 repetitive measurements per specimen.

Main Results:

  • A total of 1600 measurements were analyzed.
  • Mean deviation was 1.97 mm for the head-mounted array and 2.10 mm for the headholder system.
  • No significant accuracy difference was found between the two methods in 9 out of 10 specimens.
  • The head-mounted array showed superior performance in one specimen, with high correlation between deviations indicating registration pertinence (P < 0.001).

Conclusions:

  • Head-mounted reference arrays offer comparable accuracy to traditional headholder-based systems for neuronavigation.
  • The use of head-mounted arrays does not reduce surgical navigation accuracy.
  • Meticulous registration is essential for optimal performance with head-mounted reference arrays.