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Augmented Reality Based Transmodiolar Cochlear Implantation.

Caroline Guigou1,2, Raabid Hussain2, Alain Lalande2,3

  • 1Department Otolaryngology-Head and Neck Surgery.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|December 2, 2021
PubMed
Summary
This summary is machine-generated.

This study demonstrates an augmented reality system (ARS) for precise transmodiolar auditory implantation. The ARS guides electrode placement within the cochlear modiolus, achieving submillimetric accuracy for improved surgical outcomes.

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Area of Science:

  • Otorhinolaryngology
  • Medical Imaging
  • Surgical Navigation

Background:

  • Transmodiolar auditory implantation lacks clear anatomical landmarks for the cochlear apex and modiolar axis.
  • Augmented Reality Systems (ARS) offer a potential solution by integrating pre-operative CT scans with real-time surgical visualization.

Purpose of the Study:

  • To develop and evaluate an image-based ARS for transmodiolar auditory implantation.
  • To assess the accuracy and stability of the ARS in guiding electrode-array placement within the cochlear modiolus.

Main Methods:

  • Utilized CT scans for 3D reconstruction and identification of the modiolar axis.
  • Registered pre-operative imaging data with surgical video using a point-based approach.
  • Employed image feature-based motion tracking to monitor relative movements during surgery.

Main Results:

  • Achieved a 2D registration error of 0.4 ± 0.24 mm.
  • Demonstrated a mean entry point error of 0.6 ± 1.00 mm and an implant angular error of 13.5 ± 8.93 degrees.
  • Successful electrode-array implantation within the modiolus in all eight models.

Conclusions:

  • Developed a functional image-based ARS for identifying cochlear modiolus landmarks.
  • The ARS provides submillimetric accuracy for auditory implantation.
  • The system proved stable and accurate for transmodiolar implantation procedures.