Risk of magnetic resonance imaging-induced magnet dislocation for different types of cochlear implants: a single-center retrospective study.
Robin RuppMatthias BalkMatti SievertVictoria LeiblStephan SchlederMoritz AllnerHeinrich IroUlrich HoppeJoachim HornungAntoniu-Oreste GostianPublished in: Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale (2023)
For 1.5 T MRI, the risk of magnet dislocation ranges from 0 to 29.6% and depends on the CI device type. Implants with a diametrical magnet can be considered potentially MRI-safe, whereas in CIs with axial magnets, the CI500 is at high risk of magnet dislocation. Therefore, apart from a strict indication for an MRI and adherence to safety protocols, post-MRI follow-up examination to rule out magnet dislocation is recommended.