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DOI: 10.1055/s-0040-1711074
Choosing MRI sequences in cochlear implantees
ABSTRACT Introduction Recent developments regarding cochlear implant magnets (e.g., a bipolar diametral magnet) and refined surgical techniques (e.g., implant positioning) have had a significant impact on the relation between cochlear implants and MRIs, making the reproducible visibility of cochlea and IAC possible. MRI scanning has changed from a contraindication to a diagnostic tool. Magnet artifact size plays a central role in the visual assessment of the cochlea and IAC.
Objective The aim of this study is to compare the effect of different MRI sequences on artifact and resolution in cochlear implantees.
Material and Methods We performed an in vivo evaluation of the effect of different MRI sequences at 3 T. We performed T2 TSE, T1, T2 2D Drive, T2 3D Drive, DWI, Flair and MARS sequences.
Results Each sequence has its specific advantage and disadvantage and needs to be selectively chosen under the aspect of clinical question, artifact size, resolution and scanning time.
Conclusion Multiple factors needs to be considered for MRI scanning in cochlear implantees to address specific clinical questions adequately.
Publication History
Article published online:
10 June 2020
© 2020. 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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