CT Scans Interfere With Medical Devices

July 2008

The U.S. Food and Drug Administration (FDA) has released a public health alert, warning doctors and patients of the adverse effects that computed tomography (CT) scans have on patients using certain electronic health devices. The agency has announced that devices such as pacemakers, cardiac defibrillators, neurostimulators, retinal implants, and insulin pumps can malfunction during CT scans.

The FDA has received six reports of medical devices that broke down after a CT scan and nine reports of suspected problems. The scans can cause the devices to shock patients or send out incorrect signals. Currently, tens of millions of Americans use electronic medical devices.

The FDA recommends that CT operators use the least amount of X-ray exposure possible and be ready to treat negative reactions. The agency also suggests that patients discuss the risks and benefits of getting a CT scan with their doctor or ask if the medical device can be turned off or temporarily removed before the scan. Also, the FDA urges patients to report any pain that occurs during a CT scan.