Comparison of Cochlear Implant Magnets and Their MRI Artifact Size
Joint Authors
Sudhoff, H.
Todt, Ingo
Guerkov, R.
Gehl, H. B.
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-10
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Todt, Ingo& Guerkov, R.& Gehl, H. B.& Sudhoff, H.. 2020. Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1134453
Modern Language Association (MLA)
Todt, Ingo…[et al.]. Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1134453
American Medical Association (AMA)
Todt, Ingo& Guerkov, R.& Gehl, H. B.& Sudhoff, H.. Comparison of Cochlear Implant Magnets and Their MRI Artifact Size. BioMed Research International. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1134453
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1134453