CC BY-NC-ND 4.0 · Laryngorhinootologie 2018; 97(S 02): S285
DOI: 10.1055/s-0038-1640699
Otologie: Otology
Georg Thieme Verlag KG Stuttgart · New York

Risk analysis of magnet dislocation in patients with a cochlea implant after MRI examination

E Wolf
1  HNO-Klinik Erlangen, Erlangen
J Hornung
2  Hals-Nasen-Ohren-Klinik, Erlangen
H Iro
2  Hals-Nasen-Ohren-Klinik, Erlangen
› Author Affiliations
Further Information

Publication History

Publication Date:
18 April 2018 (online)



The procedure of a magnetic resonance imaging in patients that received a hearing aid with a cochlea implant are reserved to special indications. In workaday life a constellation like this is nothing unusual. Therefore we are often faced with problems according to the cochlea implant after a MRI-examination that sometimes can only be improved by a surgical intervention even if a special compression bandage was applied before the MRI-examination.


By means of questionnaire we evaluated disorders and impairments of patients with a cochlea implant after MRI-examinations. We recorded whether a compression bandage was applied and what kind MRI-examination was exercised, too.


Altogether 20 patients wearing a cochlear implant (total number 110) underwent a MRI examination. Thirteen patients complained about magnet dislocation, tinnitus, pain or dizziness although a compression bandage was applied. In two cases the MRI examination needed to be interrupted.


Our retrospective analysis shows that MRI-examinations that are applied to patients with a cochlea implant can lead to a lot of complications especially pain, paraesthesia and dislocation of the magnet. Therefore an extensive advice before the examination and tight indications should be considered.