View : 20 Download: 0

Magnetic resonance imaging compatibility of the polymer-based cochlear implant

Title
Magnetic resonance imaging compatibility of the polymer-based cochlear implant
Authors
Kim J.H.Min K.S.An S.K.Jeong J.S.Jun S.B.Cho M.H.Son Y.-D.Cho Z.-H.Kim S.J.
Ewha Authors
전상범
SCOPUS Author ID
전상범scopus
Issue Date
2012
Journal Title
Clinical and Experimental Otorhinolaryngology
ISSN
1976-8710JCR Link
Citation
vol. 5, no. SUPPL. 1, pp. S19 - S23
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
Objectives: In this study, we compared the magnetic resonance (MR) image artifacts caused by a conventional metal-based cochlear implant and a newly developed liquid crystal polymer (LCP)-based device. Methods: The metal-based cochlear implant system (Nurobiosys Co.) was attached to side of the head of a subject and the LCP-based device was attached to opposite side. In both devices, alignment magnets were removed for safety. Magnetic resonance imaging (MRI) was performed on a widely used 3.0 T and an ultra-high 7.0 T MRI machine. 3.0 and 7.0T MR images were acquired using T1- and T2 *-weighted gradient echo sequences, respectively. Results: In the 3.0 T images, the metal-based device on the left side generated the significant amount of artifacts. The MR images in the proximity of the metal package were obscured by the artifacts in both axial and sagittal views. On the other hand, the MR images near the LCP-based device were relatively free from the artifacts and clearly showed the brain structures. 7.0 T MR images showed the more severe distortion in the both sides but the metal-based cochlear implant system caused a much larger obscure area than the LCP-based system. Conclusion: The novel LCP-based cochlear implant provides a good MRI compatibility beyond present-day cochlear implants. Thus, MR images can be obtained from the subjects even with the implanted LCP-based neural prosthetic systems providing useful diagnostic information. Furthermore, it will be also useful for functional MRI studies of the auditory perception mechanism after cochlear implantations as well as for positron emission tomography-MRI hybrid imaging. Copyright © 2012 by Korean Society of Otorhinolaryngology-Head and Neck Surgery.
DOI
10.3342/ceo.2012.5.S1.S19
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE