Skip to main content
padlock icon - secure page this page is secure

Evaluation of Cochlear Implant Receiver Position and Its Temporal Changes

Buy Article:

$52.00 + tax (Refund Policy)


It was the aim of this study to establish normative data regarding intended changes in cochlear implants (CI) receiver positioning by one surgeon over time.Background:

With the increasing number of CI patients, the probability of needing magnetic resonance imaging (MRI) increases. The accessibility of cerebral structures is limited by MRI artifacts caused by CI. New studies show a dependence of the visibility of intracranial structures by the MRI sequences and the position of the CI receiver itself.

Retrospective and interindividual investigation of topograms with regard to the nasion–external auditory canal–internal magnet angle and the distance between the internal magnet and the external auditory canal. We evaluated scans of 150 CI recipients implanted from 2008 until 2015.

The most common implant position in the years 2008 to 2015 was a nasion–external auditory canal–internal magnet angle between 121 and 140 degrees (mean, 127 degrees) and an internal magnet–external auditory canal distance between 61 and 80 mm (mean, 70 mm). Over time the nasion–external auditory canal–internal magnet angle increased and the internal magnet–external auditory canal distance decreased, both to a statistically significant degree. A difference between the manufacturers was not observed.

The CI receiver position is important for an artifact-free examination of the internal auditory canal and the cochlea. The realization of the position over a time course supports awareness of artifact-related visibility limitations.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Artefacts; Cochlear implants receiver position; Hearing implants; Magnetic resonance imaging; Time course

Document Type: Research Article

Affiliations: 1: Department of Otolaryngology, Head and Neck Surgery 2: Department of Radiology, Unfallkrankenhaus Berlin, Berlin, Germany

Publication date: December 1, 2017

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more