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Postoperative imaging of the internal auditory canal

Visualization of active auditory implants

Postoperative Bildgebung des inneren Gehörgangs

Darstellung aktiver auditorischer Implantate

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Abstract

Background

Assessment of the internal auditory canal (IAC) and cochlea is of central importance in neurotology. The artefacts and visibility of active auditory implants on magnetic resonance imaging (MRI) vary because of their specific magnetic components. Knowledge of the size of MRI artefacts and the options for handling them is important for the auditory rehabilitation of specific diseases (e. g., vestibular schwannoma).

Methods

The current article is a literature review.

Results

MRI assessment of the IAC and cochlea after surgical placement of an active auditory implant is feasible only with a percutaneous bone-anchored hearing aid (BAHA, Ponto). When specific factors (implant position and MRI sequence) are taken into consideration, these structures can be visualized even after cochlear implantation. Complications such as magnet dislocation and pain may occur.

Conclusion

The possibility of assessing the IAC and cochlea by MRI is an important aspect that needs to be taken into consideration when planning the auditory rehabilitation of patients after acoustic neuroma surgery.

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Authors and Affiliations

  1. Department of Otolaryngology, Head and Neck Surgery, Unfallkrankenhaus Berlin, Warener Str. 7, 12683, Berlin, Germany

    I. Todt, P. Mittmann & A. Ernst

  2. Department of Radiology, Unfallkrankenhaus Berlin, Berlin, Germany

    G. Rademacher & S. Mutze

Authors
  1. I. Todt
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  2. G. Rademacher
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  3. P. Mittmann
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  4. S. Mutze
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  5. A. Ernst
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Corresponding author

Correspondence to I. Todt.

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Conflict of interest

I. Todt, G. Rademacher, P. Mittmann, S. Mutze, and A. Ernst declare that they have no competing interests.

This article review does not contain any studies with human participants or animals performed by any of the authors.

The provisions of data protection regulations were complied with. The supplement containing this article is not sponsored by industry.

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Todt, I., Rademacher, G., Mittmann, P. et al. Postoperative imaging of the internal auditory canal. HNO 65 (Suppl 2), 81–86 (2017). https://doi.org/10.1007/s00106-016-0296-6

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  • DOI: https://doi.org/10.1007/s00106-016-0296-6

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