MRI and medical considerations

What you need to know about getting an MRI with a Cochlear™ Nucleus® or Baha® implant.

If you or your child needs an MRI, or Magnetic Resonance Imaging, you want to know that the procedure is safe. MRI continues to be a common diagnostic tool used in many therapeutic areas.1,2

Because of the magnet in a cochlear implant, there are considerations when an MRI is recommended. This is the case with all cochlear implant manufacturers.

It is important to understand the MRI approvals for your implant and when another diagnostic tool such as an X-ray or CT scan may be a better option.

MRI for Cochlear™ Nucleus® Systems

For decades, Cochlear has designed the Nucleus Implants to be safe for MRIs. Today, 80% of MRIs are at 1.5 Tesla1, however, the strength of MRI machines will continue to increase.

In addition, 30% of MRIs are performed on the head or neck1, where the magnet could cause a shadow that would make the MRI image less effective. For that reason, it is recommended that the magnet be removed for MRI scans of the head and neck regions.

The following Nucleus Profile and Freedom implants are approved for MRI for up to 3.0T with the magnet removed and 1.5T with magnet in place with use of the Cochlear Nucleus Implant Bandage and Splint Kit:

  • Nucleus Profile: CI512, CI522, CI532

  • Nucleus CI24RE: CI422, CI24REH, CI24RE(CA), and CI24RE(ST)


The information contained within the above animation is also available as a downloadable pdf.

MRI for Cochlear™ Baha® Systems

For the Baha Connect System, as long as the sound processor is removed, you can have an MRI scan without any additional risk. There could be a resulting shadow in the image.

For the Baha Attract System, with the implanted magnet, the system is conditionally approved to 1.5 Tesla and there will be a large area of shadow. For any additional strength MRI or to reduce shadow area then the magnet can be temporarily removed in a straightforward procedure. The sound processor should be removed for all MRI scans.

Prior to receiving an MRI, please consult with your clinician about proper precautions.

Further information for radiographers


Baha Connect


Baha Attract

Disclaimer Title

Please seek advice from your medical practitioner or health professional about treatments for hearing loss. They will be able to advise on a suitable solution for the hearing loss condition. All products should be used only as directed by your medical practitioner or health professional. Not all products are available in all countries. Please contact your local Cochlear representative.

Views expressed by Cochlear recipients and hearing health providers are those of the individual. Consult your hearing health provider to determine if you are a candidate for Cochlear technology. Outcomes and results may vary.

ACE, Advance Off-Stylet, AOS, AutoNRT, Autosensitivity, Beam, Button, CareYourWay, Carina, Cochlear, 科利耳, コクレア, Cochlear SoftWear, Codacs, ConnectYourWay, Contour, Contour Advance, Custom Sound, ESPrit, Freedom, Hear now. And always, HearYourWay, Hugfit, Hybrid, Invisible Hearing, Kanso, MET, MicroDrive, MP3000, myCochlear, mySmartSound, NRT, Nucleus, Off-Stylet, Slimline, SmartSound, Softip, SPrint, True Wireless, the elliptical logo, WearYourWay and Whisper are either trademarks or registered trademarks of Cochlear Limited. Ardium, Baha, Baha SoftWear, BCDrive, DermaLock, EveryWear, Vistafix, and WindShield are either trademarks or registered trademarks of Cochlear Bone Anchored Solutions AB.


  1. Radiology Today Interview: Tobias Gilk — Setting Up an MRI Safety Program [Internet]. 2016 [cited 17 August 2016]. Available from:
  2. Markets and Markets. Diagnostic Imaging Market by Product (X-ray Imaging Systems, CT Scanners (High-end, Mid-end & Low-end Slice CT), MRI Systems, Ultrasound Imaging Systems, Nuclear Imaging Systems), Region (North America, Europe, Asia-Pacific, RoW) - Global Forecast to 2020. MarketsandMarkets; 2016.
  3. D774756 Cochlear Nucleus Implants MRI Guidelines.
  4. Cited October 2018.
  5. Cited October 2018.