Abstract
Magnetic resonance imaging (MRI) scanning in dailyclinical routine is important and may be required forpatients both with and without medical implants.This is true for hearing implants, and it is importantto know what the effects of MRI on the implant andnearby physical structures are.MRI safety studies of hearing implants other thancochlear implants, which are extensively observed(Gubbels and McMenomey, 2006; Vincent et al.,2008), are limited.Our group published a case study of two patientswho underwent 1.5 T MRI scanning without impair-ment to hearing or the functional integrity of theVibrant Soundbridge (VSB) (Todt et al., 2004). Anexperimental study of the influence of MRI scannerson the VSB’s transducer, the floating mass transducer(FMT), so far does not exist. Therefore, the presentstudy has two aims: (1) to examine possible MRI-related FMT position changes within the temporalbone, and their (2) effects on the transfer function.
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