I Todt1, G Rademacher2, P Mittmann3, S Mutze2, A Ernst3. 1. Klinik für Hals-, Nasen- und Ohrenheilkunde, Unfallkrankenhaus Berlin, Warener Str. 7, 12683, Berlin, Deutschland. ingo.todt@ukb.de. 2. Klinik für Radiologie und Neuroradiologie, Unfallkrankenhause Berlin, Berlin, Deutschland. 3. Klinik für Hals-, Nasen- und Ohrenheilkunde, Unfallkrankenhaus Berlin, Warener Str. 7, 12683, Berlin, Deutschland.
Abstract
BACKGROUND: Assessment of the internal auditory canal (IAC) and the cochlea is of central importance in neurotology. The artefacts and visibility of the different types of active auditory implants in MRI vary, due to their specific ferromagnetic components. Knowledge of the size of MRI artefacts and the options for handling these is important for the auditory rehabilitation of specific diseases (e. g., vestibular schwannoma). METHODS: The current paper 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.
BACKGROUND: Assessment of the internal auditory canal (IAC) and the cochlea is of central importance in neurotology. The artefacts and visibility of the different types of active auditory implants in MRI vary, due to their specific ferromagnetic components. Knowledge of the size of MRI artefacts and the options for handling these is important for the auditory rehabilitation of specific diseases (e. g., vestibular schwannoma). METHODS: The current paper 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.
Authors: Joanna Walton; Neil P Donnelly; Yu Chuen Tam; Ilse Joubert; Juliette Durie-Gair; Cay Jackson; Richard A Mannion; James R Tysome; Patrick R Axon; Daniel J Scoffings Journal: Otol Neurotol Date: 2014-06 Impact factor: 2.311
Authors: Payal Mukherjee; James D Ramsden; Nick Donnelly; Patrick Axon; Shakeel Saeed; Paul Fagan; Richard M Irving Journal: Otol Neurotol Date: 2013-09 Impact factor: 2.311
Authors: Franca Wagner; Wilhelm Wimmer; Lars Leidolt; Mattheus Vischer; Stefan Weder; Roland Wiest; Georgios Mantokoudis; Marco D Caversaccio Journal: PLoS One Date: 2015-07-22 Impact factor: 3.240