Magnetic Resonance Imaging Artifacts and Cochlear Implant Positioning at 1.5 T In Vivo
Joint Authors
Rademacher, G.
Mittmann, P.
Mutze, Sven
Schröder, Dirk
Grupe, Gloria
Ernst, Arne
Seidl, Rainer O.
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-11-08
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
Objective.
Cerebral magnetic resonance imaging with the magnet of the cochlear implant receiver/stimulator in place causes artifacts and hinders evaluation of intracerebral structures.
The aim of this study was to evaluate the internal auditory canal and the labyrinth in a 1.5T MRI with the magnet in place.
Study Design.
Observational study.
Setting.
Tertiary referral center.
Subjects and Methods.
The receiver/stimulator unit was placed and fixed onto the head of three volunteers at three different angles to the nasion–outer ear canal (90°–160°) and at three different distances from the outer ear canal (5–9 cm).
T1 and T2 weighted sequences were conducted for each position.
Results.
Excellent visibility of the internal auditory canal and the labyrinth was seen in the T2 weighted sequences with 9 cm between the magnet and the outer ear canal at every nasion–outer ear canal angle.
T1 sequences showed poorer visibility of the internal auditory canal and the labyrinth.
Conclusion.
Aftercare and visibility of intracerebral structures after cochlear implantation is becoming more important as cochlear implant indications are widened worldwide.
With a distance of at least 9 cm from the outer ear canal the artifact induced by the magnet allows evaluation of the labyrinth and the internal auditory canal.
American Psychological Association (APA)
Schröder, Dirk& Grupe, Gloria& Rademacher, G.& Mutze, Sven& Ernst, Arne& Seidl, Rainer O.…[et al.]. 2018. Magnetic Resonance Imaging Artifacts and Cochlear Implant Positioning at 1.5 T In Vivo. BioMed Research International،Vol. 2018, no. 2018, pp.1-4.
https://search.emarefa.net/detail/BIM-1129544
Modern Language Association (MLA)
Schröder, Dirk…[et al.]. Magnetic Resonance Imaging Artifacts and Cochlear Implant Positioning at 1.5 T In Vivo. BioMed Research International No. 2018 (2018), pp.1-4.
https://search.emarefa.net/detail/BIM-1129544
American Medical Association (AMA)
Schröder, Dirk& Grupe, Gloria& Rademacher, G.& Mutze, Sven& Ernst, Arne& Seidl, Rainer O.…[et al.]. Magnetic Resonance Imaging Artifacts and Cochlear Implant Positioning at 1.5 T In Vivo. BioMed Research International. 2018. Vol. 2018, no. 2018, pp.1-4.
https://search.emarefa.net/detail/BIM-1129544
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1129544