Artefacts on magnetic resonance imaging with Osia®2 bone conduction hearing aid: A cadaver study.

Autor:	Diosi B; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Bere Z; Department of Otorhinolaryngology, Head and Neck Surgery, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Csomor A; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Tapai T; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Toth Z; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Kovacs E; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Posta B; Department of Otorhinolaryngology, Head and Neck Surgery, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Csanady M; Department of Otorhinolaryngology, Head and Neck Surgery, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Nogradi A; Department of Anatomy, Histology and Embryology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary., Kincses ZT; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Rovo L; Department of Otorhinolaryngology, Head and Neck Surgery, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary., Perenyi A; Department of Radiology, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary.; Department of Otorhinolaryngology, Head and Neck Surgery, Albert Szent-Györgyi Health Center, University of Szeged, Szeged, Hungary.
Jazyk:	angličtina
Zdroj:	Cochlear implants international [Cochlear Implants Int] 2024 Oct 14, pp. 1-11. Date of Electronic Publication: 2024 Oct 14.
DOI:	10.1080/14670100.2024.2398833
Abstrakt:	Objectives: Hearing implants often limit the assessment of magnetic resonance examinations due to susceptibility artefacts. Our aim was to evaluate the impact of artefacts attributed to the Osia®2 implant system in terms of utility in visualizing selected cranial structures. Methods: A BI300 implant and an OSI200 actuator were implanted into a human cadaver head in the audiologically most favourable position according to the manufacturer's guidelines. Scanning was accomplished using the institutional head and inner ear protocol with a General Electric 1.5 Tesla scanner with retained and removed implant magnet, extended with T1 and T2 weighted sequences with metal-artefact reduction (MAVRIC SL). Image quality was evaluated by three radiologists. Results: The Osia®2 produced significant artefacts in most of the series of standard imaging sequences predominantly on the ipsilateral side of the head. The majority of the artefacts were caused by the implant magnet. Even without removing the magnet, MAVRIC SL improved image quality to such an extent that it became comparable with that after magnet removal. Conclusions: The standard sequences suffer considerable quality loss due to the artefacts, attributed predominantly to the magnetic component. Metal-artefact reduction sequences are effective in obtaining sufficient-to-good quality images without surgical magnet removal.
Databáze:	MEDLINE
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