Related Experiment Video
Updated: Dec 6, 2025
03:58
Enhancing Electrode Location Assessment in Cochlear Implantation via Computed Tomography Image Fusion
Published on: January 17, 2025
714
Comparison of Speech Recognition and Localization Ability in Single-sided Deaf Patients Implanted With Different
Iva Speck1, Manuel Christoph Ketterer, Susan Arndt
1Department of Otorhinolaryngology-Head and Neck Surgery, Medical Centre-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Summary
Electrode array design did not impact binaural benefit for single-sided deafness cochlear implant patients. Further research is needed on subjective outcomes like sound quality and music perception.
Area of Science:
- Otolaryngology
- Neurosurgery
- Biomedical Engineering
Background:
- Single-sided deafness (SSD) presents unique challenges for cochlear implant (CI) surgery.
- Choosing the appropriate electrode array (EA) design is a significant concern for patients and surgeons.
- Understanding the impact of EA design on surgical outcomes and hearing is crucial.
Purpose of the Study:
- To investigate the effect of different electrode array (EA) designs on insertion depth.
- To evaluate the audiological outcomes in patients with single-sided deafness (SSD) receiving cochlear implants (CI).
- To compare the performance of perimodiolar and lateral wall electrode arrays in SSD CI recipients.
Main Methods:
- Retrospective study at a tertiary academic center.
- Forty patients with acquired SSD were divided into three groups based on EA type: cochlear perimodiolar (CPM), cochlear lateral wall (CLW), and medEl lateral wall (MLW).
- Insertion depth was measured via tomography, and audiological outcomes (binaural speech comprehension in noise, localization) were assessed 12 months post-implantation.
Main Results:
- The medEl lateral wall (MLW) EA achieved significantly deeper insertion angles compared to cochlear perimodiolar (CPM) and cochlear lateral wall (CLW) EAs.
- No significant differences in cochlear size were observed between the groups.
- All groups demonstrated significant improvements in head shadow effect and localization ability, with no significant difference in the extent of audiological benefit between EA designs.
Conclusions:
- The choice of electrode array design (CPM, CLW, MLW) did not significantly affect the binaural benefit in single-sided deafness cochlear implant recipients.
- Further research is warranted to explore subjective outcomes, including sound quality and music perception, in relation to EA design in SSD CI patients.
