Dimensions of artefacts caused by cochlear and auditory brainstem implants in magnetic resonance imaging.
Cochlear Implants Int
; 21(2): 67-74, 2020 03.
Article
em En
| MEDLINE
| ID: mdl-31553273
ABSTRACT
Background:
The aim of the study was to investigate the extent of MRI artefacts due to the magnet of selected auditory implants.Studydesign:
Artefacts of the Synchrony cochlear implant at 1.5â T as well as at 3â T MRI devices were examined in cadavers and compared to the artefacts in MRI scans at 1.5â T of 17 patients implanted with CI (n = 12) and auditory brainstem implants (ABI) (n = 5).Results:
None of the scanned implants showed any failure after MRI. After removal of the magnet, only a portion of the images in the direct neighbourhood of the implant, especially in the temporal and parietal lobe, contained artefacts. More anatomical substructures were visible without artefacts using the MedEl Synchrony device.Conclusion:
Artefacts can be markedly reduced by rotating, self-aligning magnet. Removal of the magnet also results in reduction of artefacts.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Implantes Cocleares
/
Artefatos
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Implantes Auditivos de Tronco Encefálico
/
Perda Auditiva Neurossensorial
Tipo de estudo:
Evaluation_studies
/
Observational_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article