MRI scanning in patients implanted with a vibrant soundbridge

Todt, Ingo; Wagner, J.; Goetze, Romy; Scholz, Sandra; Seidl, R; Ernst, Arne

doi:10.1002/lary.21779

Cited by 25 publications

(31 citation statements)

References 12 publications

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“…MRI scanning with any hearing implant in place is a highly relevant issue which is recognized by the manufacturers, the clinicians, and the patients as well (9). The scanning at 1.5 or 3 T for cochlear implants causes artifacts with large areas of non-assessment.…”

Section: Discussionmentioning

confidence: 99%

MRI Artifacts and Cochlear Implant Positioning at 3 T In Vivo

Todt

Rademacher

Mittmann

et al. 2015

Otology &Amp; Neurotology

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Section: Discussionmentioning

confidence: 99%

MRI Artifacts and Cochlear Implant Positioning at 3 T In Vivo

Todt

Rademacher

Mittmann

et al. 2015

Otology &Amp; Neurotology

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“…Pain in the middle ear, scanner‐related impulse noise, pressure at the receiver bed, as well as changes to the transfer function of the FMT were the frequently observed effects. Furthermore, a transtympanal repositioning was required in two patients . Consequently, MRI is generally not permitted after VSB implantation.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, a transtympanal repositioning was required in two patients. 16 Consequently, MRI is generally not permitted after VSB implantation.…”

Section: Introductionmentioning

confidence: 99%

Prospective evaluation of reliability of cone‐beam computed tomography in detecting different position of vibroplasty middle ear implants

Güldner

Heinrichs

Weiß

et al. 2013

Clinical Otolaryngology

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Cone-beam CT as a radiological control for Vibrant Soundbridge is safe and adequately sensitive and reliable and is therefore suitable for clinical investigation. The position of the ferromagnetic transducer in the middle ear and the presence or absence of an additional coupler could be determined in this study. Therefore, cone-beam-CT is useful for the assessment of device failure when there has been gross displacement of the ferromagnetic transducer (or smaller displacements in case of a baseline postoperative cone-beam CT). Regarding the quality of imaging, cone-beam CT produced accurate results with different observers with widely varying radiological experience.

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“…The only MRI-conditional AMEI on the market at the moment is the Vibrant Soundbridge 1 503 implant (MED-EL, Innsbruck, Austria) [11], which can be used for field strengths of 1.5 Tesla (T). In a prior version of this device, several issues have been detected related to the device's electromagnetic actuator [12]. Studies by Todt et al [12,13] indicated that the implanted actuator could move due to magnetically-induced forces, leading to a number of actuator dislocations.…”

Section: Introductionmentioning

confidence: 99%

“…In a prior version of this device, several issues have been detected related to the device's electromagnetic actuator [12]. Studies by Todt et al [12,13] indicated that the implanted actuator could move due to magnetically-induced forces, leading to a number of actuator dislocations. Patients have also reported tremendous pain in the middle ear when being scanned with this device, leading to a premature ending of the procedure [12].…”

Section: Introductionmentioning

confidence: 99%

Stability of the standard incus coupling of the Carina middle ear actuator after 1.5T MRI

et al. 2020

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Limited data is available concerning the safety of active middle ear implants (AMEI) during Magnetic Resonance Imaging (MRI). Measurements in temporal bones are the gold standard for preclinical assessment of device safety. In this study the coupling stability of an actuator as used in a fully implantable AMEI was determined in temporal bones. Eleven temporal bones were implanted with the actuator according to the manufacturer's surgical guidelines. The actuator was coupled on the incus short process as recommended for sensorineural hearing loss. Temporal bones were exposed 10 times to the MRI magnetic field by entering the MRI suite in a clinically relevant way. Computed Tomography (CT) images were acquired before and after the experiment to investigate the risk of actuator dislocation. Based on the electrical impedance of the actuator, the loading of the actuator to the incus was confirmed. Relative actuator displacement was determined on the CT images by comparing the initial with the final actuator position in 3D space. Impedance curves were analyzed after each exposure to check the loading of the actuator to the ossicles. Analysis of CT images with a 0.30.6 mm in-plane resolution indicate no actuator displacement. The maximum detected change in impedance for all actuators was 8.43 Ω at the actuator's resonance frequency. Impedance curves measured when the actuator was retracted from the short process after the experiment still indicate the presence of a clear resonance peak. No actuator displacement or dislocation could be detected in the analysis of CT images and the measured impedance curves. Impedance curves obtained when the actuator was retracted from the incus short process still show a clear resonance peak, indicating the device is still functional after the MRI exposures.

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MRI scanning in patients implanted with a vibrant soundbridge

Abstract: MRI scanning with an implanted Vibrant Soundbridge has possible major side effects, but did not affect cochlear function in this series.

Cited by 25 publications

References 12 publications

MRI Artifacts and Cochlear Implant Positioning at 3 T In Vivo

MRI Artifacts and Cochlear Implant Positioning at 3 T In Vivo

Prospective evaluation of reliability of cone‐beam computed tomography in detecting different position of vibroplasty middle ear implants

Stability of the standard incus coupling of the Carina middle ear actuator after 1.5T MRI

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