Magnet dislocation during 3 T magnetic resonance imaging in a pediatric case with cochlear implant

Özgür, Abdulkadir; Dursun, Engin; Çeliker, Fatma Beyazal; Terzi, Suat

doi:10.1016/j.bjorl.2016.04.025

Cited by 8 publications

(6 citation statements)

References 10 publications

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“…Sometimes, the magnet returns to its original setting by itself after the test, but this does not always happen. Displacement of the magnet can be verified by CT scans or X-rays and sometimes it is necessary to replace the whole implant, requiring surgical intervention [8,9,14,15].…”

Section: Resultsmentioning

confidence: 99%

Difficulties With Magnetic Resonance Imaging in Patients With Cochlear Implants: A Review

Włodarczyk¹,

Skarżyński²

2020

J Hear Sci

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Introduction: There are many patients with cochlear implants (CIs) who need to undergo an MRI examination. Due to recent developments 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.

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Section: Resultsmentioning

confidence: 99%

Difficulties With Magnetic Resonance Imaging in Patients With Cochlear Implants: A Review

Włodarczyk¹,

Skarżyński²

2020

J Hear Sci

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“…The fibrous capsule is then opened, achieving direct visualisation and exposure of the magnet and inner coil. The skin and subcutaneous layers are then closed 5 , 6 , 8…”

Section: Discussionmentioning

confidence: 99%

“…An uncommon but increasingly encountered complication is the migration or dislocation of the cochlear implant magnet resulting from a magnetic resonance imaging (MRI) scan, 5 , 6 which necessitates surgery for repositioning. This magnet migration or dislocation can occur despite meticulous head bandaging as recommended by the manufacturers and other authors 3 – 5 …”

Section: Introductionmentioning

confidence: 99%

Dislocation of cochlear implant magnet during 1.5 Tesla magnetic resonance imaging despite head bandaging, and its repositioning using an endoscopic approach

Leong

Yuen

2018

J. Laryngol. Otol.

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“…These complications include discomfort or pain during the MR scan, magnet displacement, total demagnetization (implant malfunction), and reversing the polarity. [6][7][8][9][10] To prevent these problems, gauze bandage or head protection at appropriate site is recommended. 3,9) In 2014, a case of a reversed internal magnet of CI after MRI was reported.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10] To prevent these problems, gauze bandage or head protection at appropriate site is recommended. 3,9) In 2014, a case of a reversed internal magnet of CI after MRI was reported. 11) Here, we have reported the case of the same patient in which the reversed magnet of CI spontaneously extruded from the skin.…”

Section: Introductionmentioning

confidence: 99%

Spontaneous Extrusion of a Reversed Internal Magnet of a Cochlear Implant

Kim¹,

Choi²,

Oh³

et al. 2021

J Clin Otolaryngol Head Neck Surg

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With the increasing of cochlear implantation, necessity of magnetic resonance imaging (MRI) of cochlear implant (CI) recipients is also increasing. This patient was previously reported as a case of reversion of internal magnet of CI after undergoing MRI. At that time, the CI device functioned normally after the polarity reversion of external device. Eight years later from that event, the patient came for sudden functional loss of the CI. Then, we found the patient's internal magnet of CI was spontaneously extruded through the skin. The function of CI was perfectly recovered after the surgery for insertion of internal magnet.

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Magnet dislocation during 3 T magnetic resonance imaging in a pediatric case with cochlear implant

Cited by 8 publications

References 10 publications

Difficulties With Magnetic Resonance Imaging in Patients With Cochlear Implants: A Review

Difficulties With Magnetic Resonance Imaging in Patients With Cochlear Implants: A Review

Dislocation of cochlear implant magnet during 1.5 Tesla magnetic resonance imaging despite head bandaging, and its repositioning using an endoscopic approach

Spontaneous Extrusion of a Reversed Internal Magnet of a Cochlear Implant

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