Featured Research

from universities, journals, and other organizations

MRI Machines May Damage Cochlear Implants

Date:
December 1, 2008
Source:
American Academy of Otolaryngology -- Head and Neck Surgery
Summary:
Patients with cochlear implants may want to steer clear of certain magnetic imaging devices, such as 3T MRI machines, because the machines can demagnetize the patient's implant, according to new research published in Head and Neck Surgery.

Patients with cochlear implants may want to steer clear of certain magnetic imaging devices, such as 3T MRI machines, because the machines can demagnetize the patient's implant, according to new research published in the December 2008 issue of Otolaryngology – Head and Neck Surgery.

Related Articles


A cochlear implant is an electronic device that restores partial hearing to the deaf. It is surgically implanted in the inner ear and activated by a device worn outside the ear. Unlike a hearing aid, it does not make sound louder or clearer. Instead, the device bypasses damaged parts of the auditory system and directly stimulates the nerve of hearing, allowing individuals who are profoundly hearing impaired to receive sound. It is estimated that more than 100,000 people have cochlear implants.

The study, conducted by a team of German and American researchers, tested several cochlear device magnets on a 3T MRI scanner with active shielding at a variety of angles (0, 80, 90, 100, 110, and 180). The researchers discovered that during routine use of 3T MRI machines at angles above 80, an unacceptable level of demagnetization was reached, causing permanent damage to devices with non-removable magnets, and creating the potential of exposing patients to undesirable magnetic forces.

3T MRI scanners are the next generation of MRI scanners and are significantly more powerful than 1.5T MRI scanners.

As a result of their findings, the study authors recommend that MRI scans on patients with cochlear implants should be performed using a 3T MRI machine only if a 1.5T machine is not available, and if the benefits of the scan far outweigh the risk of cochlear implant demagnetization.

The study's authors are Omid Majdani, MD, PhD; Martin Leinung, MD, PhD; Thomas Rau; Arash Akbarian, MD, PhD; Martin Zimmerling, PhD; Minoo Lenarz, MD, PhD; Thomas Lenarz, MD, PhD; and Robert Labadie, MD, PhD.


Story Source:

The above story is based on materials provided by American Academy of Otolaryngology -- Head and Neck Surgery. Note: Materials may be edited for content and length.


Cite This Page:

American Academy of Otolaryngology -- Head and Neck Surgery. "MRI Machines May Damage Cochlear Implants." ScienceDaily. ScienceDaily, 1 December 2008. <www.sciencedaily.com/releases/2008/12/081201081721.htm>.
American Academy of Otolaryngology -- Head and Neck Surgery. (2008, December 1). MRI Machines May Damage Cochlear Implants. ScienceDaily. Retrieved February 27, 2015 from www.sciencedaily.com/releases/2008/12/081201081721.htm
American Academy of Otolaryngology -- Head and Neck Surgery. "MRI Machines May Damage Cochlear Implants." ScienceDaily. www.sciencedaily.com/releases/2008/12/081201081721.htm (accessed February 27, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, February 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Cherries, Snap Peas and More Tasty Spring Produce

Cherries, Snap Peas and More Tasty Spring Produce

Buzz60 (Feb. 27, 2015) From sweet cherries to sugar snap peas, spring is the peak season for some of the tastiest and healthiest produce. Krystin Goodwin (@Krystingoodwin) has the best seasonal fruits and veggies to spring in to good health! Video provided by Buzz60
Powered by NewsLook.com
New FDA-Approved Diabetes Medicine Might Save Drugmaker

New FDA-Approved Diabetes Medicine Might Save Drugmaker

Newsy (Feb. 26, 2015) The U.S. Food and Drug Administration approved new diabetes drug Toujeo on Wednesday, a move that might save French drugmaker Sanofi&apos;s profits. Video provided by Newsy
Powered by NewsLook.com
The Best Foods to Battle Stress

The Best Foods to Battle Stress

Buzz60 (Feb. 26, 2015) If you&apos;re dealing with anxiety, there are a few foods that can help. Krystin Goodwin (@krystingoodwin) has the best foods to tame stress. Video provided by Buzz60
Powered by NewsLook.com
The 5 Best Tips to Look Younger Now

The 5 Best Tips to Look Younger Now

Buzz60 (Feb. 26, 2015) Life happens, and we all get older, but forget the pricey anti-aging products and plastic surgery. You can tweak your habits to turn back the hands of time. Krystin Goodwin (@krystingoodwin) has a few simple tips to help you look and feel younger. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins