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Cone-beam computed tomography in children with cochlear implants: The effect of electrode array position on ECAP
Marine Lathuillière1, Fanny Merklen1, Jean-Pierre Piron1
1Cochlear Implant Centre, Ear Nose and Throat Department, University Hospital Gui-de-Chauliac, Montpellier, France.
International Journal of Pediatric Otorhinolaryngology
|December 26, 2016
Summary
Cone-beam computed tomography (CBCT) is feasible for assessing young children with cochlear implants (CIs). Intracochlear electrode position did not significantly affect electrophysiological measurements, though CBCT protocols need refinement.
Area of Science:
- Medical Imaging
- Otolaryngology
- Pediatric Audiology
Background:
- Cochlear implants (CIs) are vital for hearing restoration in children.
- Accurate electrode placement is crucial for CI efficacy.
- Assessing CI position in young children poses imaging challenges.
Purpose of the Study:
- To evaluate the feasibility of cone-beam computed tomography (CBCT) in pediatric CI recipients.
- To investigate the impact of intracochlear electrode position on audiological outcomes.
Main Methods:
- Prospective study of 40 children with CIs.
- CBCT or X-ray imaging used to assess electrode placement and insertion angles in 55 implants.
- Recorded electrophysiological (T-NRT) and behavioral (T and C levels) data.
Main Results:
- CBCT was feasible in 60% of children without sedation.
- CBCT identified accidental scala vestibuli insertion in 3 implants.
- No significant effect of electrode position or insertion angle on electrophysiological data was found.
Conclusions:
- CBCT is a viable tool for anatomical assessment in pediatric CI patients.
- Intracochlear position did not significantly influence electrically evoked compound action potential (ECAP) thresholds.
- CBCT protocols require optimization for higher success rates.
