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DOI: 10.1055/s-0042-1746482
Intraindividual comparison of second and third generation cochlea implant magnet artifact
Introduction First generation of cochlea implant magnet beard the risk of pain, magnet dislocation and demagnetization. Cochlea implant magnet of the second generation allowed MRI scanning without pain and demagnetization. The artifact size and localization caused by the magnet depends on various variables like head position in the scanner, position of the implant at the head and possibly the magnet itself.
Third generation of cochlea implant magnets are characerized by an improved coil attachment to the implant by specific magnet material choice.
Aim of the present study was to compare the MRI artifact size at 3 T of a second and third generation cochlea implant magnet.
Material and Methods We performed prospectively 3 T T2 TSE scannings with a regular MRI sequence for the evaluation of the cerebellopontine angle. Ex vivo we confirmed an identical position of a second and third generation cochlea implant magnet and compared the size of the magnet artifact.
Results MRI artifact size at 3T is equally sized between second and third generation cochlea implant magnets.
Conclusion Third generation of cochlea implant magnet offers no disadvantage in MRI artifact size in comparison to a second generation cochlea implant magnet.
Publikationsverlauf
Artikel online veröffentlicht:
24. Mai 2022
© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).
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