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Articles linked to this work by shared authors, journal, and citation graph.

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Spoken Language Outcomes After Early Cochlear Implantation in a Diverse, Multi-Institutional Cohort of Congenitally Deaf Children.

Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·2026
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Updated: May 15, 2025

Enhancing Electrode Location Assessment in Cochlear Implantation via Computed Tomography Image Fusion
03:58

Enhancing Electrode Location Assessment in Cochlear Implantation via Computed Tomography Image Fusion

Published on: January 17, 2025

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Cochlear Implantation of Slim Precurved Arrays Using Automatic Preoperative Insertion Plans.

Kareem O Tawfik1, Mohammad M R Khan2, Ankita Patro1

  • 1Department of Otolaryngology-Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|May 14, 2025
PubMed
Summary

Preoperative planning for cochlear implant (CI) electrode array (EL) insertion significantly improves EL positioning and reduces translocation risks. This system enhances surgical accuracy for slim precurved electrode arrays.

Keywords:
Cochlear implantElectrode array positioningPrecurved electrode arraySurgical planning

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Area of Science:

  • Otorhinolaryngology
  • Neurosurgery
  • Medical Imaging

Background:

  • Cochlear implantation aims to restore hearing by inserting an electrode array (EL) into the cochlea.
  • Accurate EL positioning is crucial for optimal device function and patient outcomes.
  • Current methods for planning EL insertion lack patient-specific customization, potentially leading to suboptimal placement.

Purpose of the Study:

  • To evaluate a novel system for patient-customized preoperative planning of slim precurved electrode array insertion.
  • To assess the impact of this planning system on electrode array positioning accuracy and safety.

Main Methods:

  • A system for patient-customized electrode array insertion planning was developed using automated image analysis.
  • Twenty-one temporal bone specimens were used: 14 in the control group (traditional insertion) and 7 in the experimental group (planned insertion).
  • Postoperative imaging analyzed angular insertion depth (AID), mean modiolar distance (MMD), and scalar position. Clinical data from 35 insertions (7 planned) were also analyzed.

Main Results:

  • No translocations or foldovers occurred in the 7 experimental temporal bone insertions or the 7 experimental clinical insertions.
  • In control groups, scalar translocations occurred in 3/14 cadaveric insertions and 2/28 clinical insertions.
  • When planned depth was achieved in experimental cases, variability in mean modiolar distance (MMD) was significantly reduced (0.07 mm vs. 0.13 mm, p=0.039).

Conclusions:

  • Patient-customized preoperative planning for cochlear implant electrode array insertion shows a trend toward improved positioning within the scala tympani.
  • The system significantly reduces variability in mean modiolar distance when the planned insertion depth is achieved.
  • This planning approach enhances surgical precision and safety in cochlear implant procedures.