Comparison of Cochlear Implant Magnets and Their MRI Artifact Size

Todt I, Guerkov R, Gehl HB, Sudhoff H (2020)
BioMed Research International 2020: 5086291 .

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Todt, Ingo; Guerkov, R.; Gehl, H. B.; Sudhoff, HolgerUniBi
Abstract / Bemerkung
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 CI magnet-related maximum artifact sizes of various cochlea implant systems. Materials and Methods. We performed an in vivo measurement of MRI artifacts at 1.5 and 3 Tesla with three cochlear implant magnet systems (AB 3D, Medel Synchrony, and Oticon ZTI). The implant, including the magnet, was positioned with a head bandage 7.0 cm and 120° from the nasion, external auditory canal. We used a TSE T2w MRI sequence on the axial and coronal plains and compared the artifacts in two volunteers for each tesla strength. Results. Intraindividual artifact size differences between the three magnets are smaller than interindividual maximum artifact size differences. 3 T MRI scans, in comparison to 1.5 T MRI scans, show a difference between soft artifact areas. Conclusion. We observed no major difference between maximum implant magnet artifact sizes of the three implant magnet types.
Erscheinungsjahr
2020
Zeitschriftentitel
BioMed Research International
Band
2020
Art.-Nr.
5086291
ISSN
2314-6133
eISSN
2314-6141
Page URI
https://pub.uni-bielefeld.de/record/2951609

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Todt I, Guerkov R, Gehl HB, Sudhoff H. Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International. 2020;2020: 5086291 .
Todt, I., Guerkov, R., Gehl, H. B., & Sudhoff, H. (2020). Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International, 2020, 5086291 . https://doi.org/10.1155/2020/5086291
Todt, I., Guerkov, R., Gehl, H. B., and Sudhoff, H. (2020). Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International 2020:5086291 .
Todt, I., et al., 2020. Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International, 2020: 5086291 .
I. Todt, et al., “Comparison of Cochlear Implant Magnets and Their MRI Artifact Size”, BioMed Research International, vol. 2020, 2020, : 5086291 .
Todt, I., Guerkov, R., Gehl, H.B., Sudhoff, H.: Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International. 2020, : 5086291 (2020).
Todt, Ingo, Guerkov, R., Gehl, H. B., and Sudhoff, Holger. “Comparison of Cochlear Implant Magnets and Their MRI Artifact Size”. BioMed Research International 2020 (2020): 5086291 .

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