Oticon Alta

Can a Patient With a Cochlear Implant Undergo MRI?

A MRI scanner utilizes a powerful magnetic field to image parts of the body. Regardless of what part of the body is being viewed (e.g. the knee), the whole body is exposed to the magnetic fields generated by the MRI scanner when a patient is in the imaging room. The magnetic properties of an MRI machine can potentially cause harm to a cochlear implant device and the user.

Newer cochlear implant devices have become available in recent years which allow removal of the magnet prior to an MRI. This requires a procedure with a small incision to remove the magnet from the subcutaneous portion of the implant resting behind the ear before MRI completion; a similar procedure is performed to replace the magnet to allow resumption of implant use after MRI. Magnet removal makes it safe for an implant recipient to have an MRI up to 1.5 Tesla in strength (a measure of magnetic field). Although some studies have suggested it may be safe for cochlear implant patients to undergo MRI with fixed (non-removable) magnets, especially in weaker strength MRI scanners (e.g. 0.2 Tesla), this has not been accepted for general use in the United States. A cochlear implant recipient should always consult with their implant surgeon before any imaging is performed, regardless of the imaging technique.

Share this article


1 person likes this

Comment

Related Content
Preferred Professionals Near You
See More Preferred Professionals

Clinics above not close enough?
Search with your zipcode below.

Sign Up for Our eNewsletter
Our free eNewsletter is delivered to your inbox every two weeks - it’s the best way to stay informed about what’s new at Healthy Hearing!
Preferred Hearing Professionals Near You

Total Hearing Care - Edison

4 Progress St Ste A1
Edison, NJ 08820

Click Here for Details

JFK Medical Center The Center for Audiology

65 James St
Edison, NJ 08820

Click Here for Details

ENT and Allergy Associates, LLP - Staten Island

1 Teleport Dr Ste 200
Staten Island, NY 10314

Click Here for Details