Safety Study of the Cochlear Nucleus® 24 Device with Internal Magnet in the 1.5 Tesla Magnetic Resonance Imaging Scanner

Gubbels, Samuel P.; McMenomey, Sean O.

doi:10.1097/01.mlg.0000216807.03225.ce

Cited by 78 publications

(58 citation statements)

References 10 publications

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“…Although there is a risk that the magnet may become displaced from the device, this did not occur when it was bound in cadavers (10). Displacement of the magnet has been described in an MRI with binding, although in this case the patient had a previous procedure to remove and replace the magnet, which may have weakened the pocket (15).…”

Section: Discussionmentioning

confidence: 95%

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Magnetic Resonance Imaging at 1.5 T After Cochlear Implantation

Crane

Gottschalk

Kraut³

et al. 2010

Otology &Amp; Neurotology

114

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Section: Discussionmentioning

confidence: 95%

“…Cadaver studies have shown that the force required to fracture the CI receiver bed was much higher than that generated in a 1.5-T MRI scanner (7,8). Although demagnetization of the internal magnet is a concern, in practice this effect has been minimal even after multiple MR images (5,9,10), and the effect probably is only significant with 3-T scanners (11).…”

mentioning

confidence: 95%

Magnetic Resonance Imaging at 1.5 T After Cochlear Implantation

Crane

Gottschalk

Kraut³

et al. 2010

Otology &Amp; Neurotology

114

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show abstract

“…8,13,19,24 Buna karşın bazı çalışmalarda ise MRG'nin implanta herhangi bir zarar vermediği belirtilmektedir. [52][53][54][55][56] Böyle bir durum karşısında kohlear implant cerrahisi geçiren hastanın implantı takan cerraha danışması uygun olacaktır. 8 Kohlear implantın dış parçasının sudan sakınılması gerektiği konusunda hasta ve yakınları bilgilendirilir.…”

Section: Taburculuk Eği̇ti̇mi̇unclassified

Responsibilities of Nurse in Cochlear Implant Surgery: Review

Altınbaş¹,

Korkmaz²,

Kirazlı³

2016

Turkiye Klinikleri J Nurs

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K ohlear implantlar; bilateral ileri veya çok ileri derecede sensörinö-ral işitme kaybı olan, işitme cihazından yeterince ya da hiç fayda göremeyen çocuk ve erişkinlere, sesleri daha iyi algılama ve konuş- A An na ah h t ta ar r K Ke e l li i m me e l le er r: : Kohlear implantlar; işitme kaybı; cerrahi; komplikasyonlar; hemşirelik bakımı A AB BS S T TR RA AC CT T A cochlear implant, is a very useful application on the partial recovery of hearing for individuals that have severe sensorineural hearingloss and have not benefit from hearing aids. Nowadays, cochlear implant has provided a new lifestyle to many hearing-impaired children and adults. Centers which are conducted cochlear implant which is currently 38 in our country and hundreds of cochlear implant practices are being implemented in these centers. Nurses have an important responsibility of providing improvements in patients undergoing cochlear implant surgery, prevention, early detection and management of complications which may be occured. Nurses have needed to educate themselves to be prepared for such technological surgery and to provide the care of patients with the best conditions. The number of medical publications and studies about the implementation of cochlear implant has been increased rapidly, and also in the literature, studies dealing with the nursing aspect of this issue have not been found. In this article, cochlear implant's technical specifications, selection of patients, the impact on quality of life, preoperative and postoperative care of cochlear implant patients with the surgical technique and possible complications are included. This study is expected to contribute to our colleagues working in these units which cochlear implant is implemented and planned to be implemented.

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“…CI manufacturers have developed devices with removable magnets, and several articles have addressed the issues related to the MRI compatibility and safety of CIs [1,2] . Gubbels et al [1] conducted a cadaveric study and found that performing a 1.5-Tesla MRI on subjects with Cochlear Nucleus 24 implants did not result in any significant demagnetization of the internal magnet, nor was there any displacement of the magnet when an external compression dressing was applied. They concluded that surgical removal of the internal magnet before scanning with the 1.5-Tesla MRI may not be necessary if a compression dressing is applied.…”

Section: Introductionmentioning

confidence: 99%

Magnet Removal and Reinsertion in a Cochlear Implant Recipient Undergoing Brain MRI

Migirov¹,

Wolf²

2013

ORL

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Background: Recent advances in cochlear implants (CIs) and in magnetic resonance imaging (MRI) techniques have led to increasing numbers of implanted patients who have undergone brain MRIs for various reasons. This paper first describes the surgical procedure for removing the magnet before an MRI and its subsequent reinsertion immediately afterwards in a CI recipient. Method: After the administration of local anesthesia, the magnet was removed by a surgical incision made along the posterior margin of the receiver-stimulator. The flap was elevated and the capsule over the implant was incised. The magnet was removed, maintained under sterile conditions and reinserted immediately after the completion of the 1.5-Tesla MRI. Results: The patient was able to wear her device immediately after surgery. Large CI-associated artifacts were observed on the MRIs irrespective of sequences. The function of the device was not altered by either the MRI or the surgical procedure. Conclusion: The proposed surgical incision that follows the posterior margins of the receiver-stimulator allows the wearing of the device immediately after the surgical procedure. An MRI has limited diagnostic value for lesions located on the implanted side due to unavoidable artifacts, even after the magnet has been removed.

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Safety Study of the Cochlear Nucleus® 24 Device with Internal Magnet in the 1.5 Tesla Magnetic Resonance Imaging Scanner

Cited by 78 publications

References 10 publications

Magnetic Resonance Imaging at 1.5 T After Cochlear Implantation

Magnetic Resonance Imaging at 1.5 T After Cochlear Implantation

Responsibilities of Nurse in Cochlear Implant Surgery: Review

Magnet Removal and Reinsertion in a Cochlear Implant Recipient Undergoing Brain MRI

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