FDA issues face mask warning for MRI exams

By Kate Madden Yee, AuntMinnie.com staff writer

December 7, 2020 -- After a patient's face was burned from metal in a mask during a 3-tesla MRI scan, the U.S. Food and Drug Administration (FDA) on December 7 issued reminder guidance to patients and healthcare providers regarding wearing metal during MRI exams.

"Today, the [FDA] is informing patients and healthcare providers that patients may be injured if they wear face masks (such as surgical or nonsurgical masks and respirators) with metal parts and coatings during an MRI exam," the agency said. "The FDA reminds patients and providers that patients should not wear any metal during an MRI."

Because patients must wear masks to prevent the potential transmission of COVID-19, the issue has become urgent, the agency said in its statement. The patient who was injured underwent a 3-tesla MRI exam of the neck and was burned in a pattern consistent with the mask outline, the agency said.

"Given the increased use of face masks during the COVID-19 pandemic, the FDA wants patients and healthcare providers to be aware of the potential risk of face burns related to the use of patient face masks containing metal during an MRI," the agency said. "Metal parts ... [in a face mask] may become hot and burn the patient during an MRI."

It's appropriate for patients to wear face masks during an MRI exam due to the COVID-19 pandemic, the FDA said. But some face masks contain metal parts, like nose clips or wires, nanoparticles, or antimicrobial coating that may contain metal such as silver or copper. Before the MRI scan begins, healthcare providers who perform MRI exams should confirm the face mask has no metal.

"The metal could result in radio frequency (RF)-induced heating," the agency said. "This may represent a hazard for MR imaging during the COVID-19 pandemic."

The solution? Don't allow patients to wear their own masks during an MR exam, said Tobias Gilk, senior vice president of Radiology-Planning, founder of Gilk Radiology Consultants, and an MRI safety advocate.

"The staples holding the elastic to the mask are too small to conduct heat, and since the COVID-19 pandemic, patients have been imaged in masks that have nose bridges without injury," he said. "But antimicrobial treated fabric can heat up. So to be safe, patients should be provided with disposable surgical masks before their MRI."

The FDA asks any patients who are burned by a face mask during an MRI scan -- or providers who witness this kind of patient injury -- to report the event. It also refers patients and providers to American College of Radiology (ACR) resources regarding MRI exams during the COVID-19 pandemic.

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Last Updated bc 12/8/2020 7:10:36 AM