News | January 22, 2015

Study Documents Pain, Magnet Displacement in Patients With Cochlear Implants

Data demonstrates significant proportion of patients experienced discomfort or pain during MRI process

MRI systems, Cochlear Implants, JAMA Otolaryngology-Head & Neck Surgery

January 22, 2015 — Pain, discomfort and magnet displacement were documented in a small medical records review study of patients with cochlear implants (CIs) who underwent magnetic resonance imaging (MRI), according to a report published online by JAMA Otolaryngology-Head & Neck Surgery.

Undergoing MRI can pose concerns for patients with CI because of exposure of the internal magnet to a strong electromagnetic field. There have been previous reports of adverse events, according to background in the study.

Bo Gyung Kim, M.D., Ph.D., of the Soonchunhyang University College of Medicine, South Korea, and co-authors reviewed the medical records of 18 patients with CIs who had MRIs between 2003 and 2014 at a single center. Of the patients, 16 underwent MRI in a 1.5-T scanner and two patients had an MRI in a 3.0-T scanner. The MRIs included 12 brain scans and 18 scans of other areas of the body.

Of the 18 patients, 13 completed their MRI scan without complications (25 of 30 scans). Five patients fitted with protective head bandages could not complete their MRI because of pain: one of these patients experienced magnet displacement. Another patient tolerated the pain and discomfort of her third MRI scan, despite having gauze bandages, but experienced magnet polarity reversal. The two patients that underwent 3.0-T MRI scanning did so without bandaging and experienced no adverse events or complications (one patient had an MRI of the knee and the other patient, who had an MRI of the shoulder, did report some discomfort). Hearing-related performance was unaffected in three CI patients who had major adverse events associated with MRI scanning.

"In the present study, however, we found that seven of the 13 patients who had not undergone general anesthesia (seven of 19 MRI scans) experienced discomfort or pain during the MRI scans. One patient who had undergone general anesthesia was awakened by pain during the MRI scan and could not complete the MRI. Our data clearly demonstrate that a significant proportion of patients experienced discomfort or pain during the MRI process and were unable to complete the scans. Therefore, in addition to device safety and image quality, patient comfort should be considered when performing MRI procedures," the authors note.

For more information: http://media.jamanetwork.com

 

 

Related Content

FDA Clears Siemens Healthineers' GOKnee3D MRI Application
Technology | Magnetic Resonance Imaging (MRI) | February 19, 2018
The U.S. Food and Drug Administration (FDA) has cleared GOKnee3D, a magnetic resonance imaging (MRI) application from...
A brain MRI. Gadolinium contrast agents (GBCAs) are partly retained in the brain, raising safety concerns.
Feature | Magnetic Resonance Imaging (MRI) | February 16, 2018 | Dave Fornell
One of the biggest concerns in radiology in recent years is the safety of gadolinium-based contrast agents (GBCAs) us
Arterys Receives First FDA Clearance for Oncology Imaging Suite With Deep Learning
Technology | Artificial Intelligence | February 15, 2018
Arterys Inc. announced its fifth 510(k) clearance from the U.S. Food and Drug Administration (FDA) for the Arterys...
AHRA and Canon Medical Systems Announce 2017 Putting Patients First Grant Winners
News | Patient Engagement | February 14, 2018
The Association for Medical Imaging Management (AHRA) and Canon Medical Systems recently announced the tenth annual...
Videos | Pediatric Imaging | February 14, 2018
ITN Associate Editor Jeff Zagoudis demonstrates several mobile apps designed to help pediatric patients learn what an
Vantage Galan 3T XGO Edition MRI system was cleared by the FDA.
Technology | Magnetic Resonance Imaging (MRI) | February 12, 2018
February 12, 2018 — Physicians now have access to more neuro and cardiac...
Indian Man Killed in MRI Accident. MRI magnet safety is key, the magnet is always on.
News | Magnetic Resonance Imaging (MRI) | January 30, 2018 | Jeff Zagoudis, Associate Editor
Investigations are underway at a hospital in Mumbai, India, after a man was killed when he was sucked into a magnetic...
Bracco Diagnostics' MultiHance Contrast Agent Earns Expanded Approval for Pediatric MRI
News | Contrast Media | January 30, 2018
Bracco Diagnostics Inc. announced the labeling of its contrast agent MultiHance has obtained U.S. Food and Drug...
Brain-scan guided emergency stroke treatment can save more lives
News | Neuro Imaging | January 25, 2018
January 25, 2018 – Advances in brain imagin...
Overlay Init