REVIEW PAPER
DIFFICULTIES WITH MAGNETIC RESONANCE IMAGING IN PATIENTS WITH COCHLEAR IMPLANTS: A REVIEW
Kinga Włodarczyk 1, A-F  
,   Piotr Henryk Skarżyński 1, 2, 3, 4, A-D,F  
 
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1
Interdysciplinary Student’s Scientific Society, Institute of Physiology and Pathology of Hearing and Medical University of Warsaw, Poland
2
Department of Teleaudiology and Screening, World Hearing Center, Institute of Physiology and Pathology of Hearing, Poland
3
Institute of Sensory Organs, Poland
4
Department of Heart Failure and Cardiac Rehabilitation, Medical University of Warsaw, Poland
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article;
CORRESPONDING AUTHOR
Kinga Włodarczyk   

Interdisciplinary Student’s Scientific Society, Institute of Physiology and Pathology of Hearing and Medical University of Warsaw, ul. Mokra 17, Kajetany n. Warsaw, 05-830 Nadarzyn, Poland, email: kingawlodarczyk01@gmail.com, tel. +48 784019636
Publication date: 2020-03-31
 
J Hear Sci 2020;10(1):21–23
 
KEYWORDS
TOPICS
ABSTRACT
Background:
There are many patients with cochlear implants (CIs) who need to undergo an MRI examination. Due to recent develop-ments in science and medicine a CI is no longer a contraindication for an MRI.

Material and Methods:
The review is based on scientific publications found in Google Scholar and PubMed databases.

Results:
The problems with carrying out an MRI examination on a patient with a CI are the low quality of the image and possible head pain when the MRI machine is operating. Demagnetization or displacement of the CI magnet can also occur. Normally, special procedures are required, including removing all external parts of the implant system before the MRI, and bandaging of the head before the procedure. Implants compatible with new generation magnets exist and they allow an MRI to be performed without removing magnetic materials from the CI.

Conclusions:
There are still many limitations in performing an MRI with CI patients; however the risk of implant damage can be significantly decreased. Patient comfort during the examination can also be increased.

 
REFERENCES (19)
1.
Tam YC, Lee JWY, Gair J, Jackson C, Donnelly NP, Tysome JR, Axon PR, Bance ML. Performing MRI scans on cochlear implant and auditory brainstem implant recipients: review of 14.5 years experience. Otol Neurotol, 2020, 41(5):e556-e562.
 
2.
Eisenhut F, Taha L, Kleibe I, Hornung J, Iro H, Doerfler A, Lang S. Fusion of preoperative MRI and postoperative FD-CT for direct evaluation of cochlear implants: an analysis at 1.5 T and 3 T. Clinical Neuroradiology, 2019 Nov 21.
 
3.
Tek F, MüLler S, Boga E, Gehl HB, Seitz D, Scholtz LU, Sudhoff H, Todt I. 3T MRI-based estimation of scalar cochlear implant electrode position. Acta Otorhinolaryngol Ital, 2019; 39(4):269–273.
 
4.
Balkany TJ, Dreisbach JN, Seibert CE. Radiographic imaging of the cochlear implant candidate: preliminary results. Otolaryngol Head Neck Surgery, 1986; 95(5):592-597.
 
5.
Abrams H. Cochlear implants are a contraindication to MRI. JAMA, 1989; 261(1):46.
 
6.
Ito J. Considerations of cochlear implant surgery. Clinical Otolaryngol Allied Sciences, 1993; 18(2):108-111.
 
7.
Schröder D, Grupe G, Rademacher G, Mutze S, Ernst A, Seidl R, Mittmann P. Magnetic resonance imaging artifacts and cochlear implant positioning at 1.5 T in vivo. BioMed Res Intl, 2018 Nov 8.
 
8.
Bawazeera N, Vuong H, Riehmc S, Veillonc F, Charpiotb A. Magnetic resonance imaging after cochlear implants. J Otol, 2019; 14: 22-25.
 
9.
Leinung M, Loth A, Gröger M, Burck I, Vogl T, Stöver T, Helbig S, Cochlear implant magnet dislocation after MRI: surgical management and outcome. Eur Archiv Oto-Rhino-Laryngology, 2020 May; 277(5): 1297-1304.
 
10.
Cochlear. Cochlear Nucleus cochlear implants. Important information for cochlear implant recipients. 2016.
 
11.
Oticon Medical. Magnetic Resonance Imaging (MRI) Exam Instructions for Use. 2015.
 
12.
MED-EL. Procedury medyczne dla systemów implantów MED-EL. 2019.
 
13.
Todt I, Tittel A, Ernst A, Mittmann P, Mutze S. Pain free 3 T MRI scans in cochlear implantees. Otol Neurotol, 2017; 38: e401-e404.
 
14.
Eppersona M, Bornb H, Greinwald J. Radiologic recognition of cochlear implant magnet displacement. Intl J Pediatr Otorhinolaryngol, 2019; 120: 64-67.
 
15.
Özgür A, Dursuna E, Celiker F, Terzi S. Magnet dislocation during 3 T magnetic resonance imaging in a pediatric case with cochlear implant. Brazil J Otorhinolaryngol, 2019; 85(6): 799-802.
 
16.
Tysome JR, Tam YC, Patterson I, Graves MJ, Gazibegovic D. Assessment of a novel 3T MRI compatible cochlear implant magnet: torque, forces, demagnetization, and imaging. Otol Neurotol, 2019; 40: e966-e974.
 
17.
Cass N, Honce J, O’Dell A, Gubbels S. First MRI with new cochlear implant with rotatable internal magnet system and proposal for standardization of reporting magnet-related artifact size. Otol Neurotol, 2019; 40: 883–891.
 
18.
Advanced Bionics. HiRes Ultra 3D Hassle Free MRI. 2019.
 
19.
MED-EL. Synchrony System In Sync with Natural Hearing. 2019.
 
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