Why Every MRI Suite Needs an Emergency Communication System

Most patient care areas have some way to call for help without walking away from the patient: a nurse call button, an intercom, a phone on the wall. The MRI scan room (Zone IV) is different. It's shielded, and anything ferromagnetic, including most standard call buttons and radios, can't go inside it. That leaves a lot of MRI suites with no reliable way for a technologist to summon help from inside the room.

The gap in practice

If a patient has a seizure, a contrast reaction, or a cardiac event during a scan, or if the technologist is the one who needs help, the standard response is to physically leave the room and find someone. That takes time the situation may not allow, and it means leaving the patient alone in the interim.

Why it's getting more common, not less

Staffing models increasingly rely on a single technologist per shift, particularly nights, weekends, rural sites, and mobile MRI units. A single-tech shift with no in-room communication option means the response plan for an emergency is, functionally, "leave and hope someone is nearby."

What a Zone IV communication system needs to do

• Work inside a shielded, high-field magnetic environment without interference or artifacts

• Let the technologist call for help without leaving the patient's side

• Alert people outside the suite immediately and reliably

• Require no workflow change or modification to the MRI system itself

The 2024 ACR MR Safety Manual now explicitly recommends this kind of setup (more on that in a separate post on ACR guidance). Most facilities haven't put one in place yet, not because the risk isn't recognized, but because purpose-built options for this exact problem are new.

That's what ITAS (Imaging Tech Alarm System) is built for: a fiber-optic emergency alert system designed specifically for Zone IV, with no RF or magnetic interference and no modification to the MRI system. It’s an all-inclusive lease: installation, maintenance, software updates, and support. One unit covers one MRI suite.

FAQ

Can a normal call button be used inside an MRI room? No. Most contain metal or electronic components that aren't safe near the magnet. A Zone IV communication system has to be purpose-built for the MRI environment.

Does adding a call system require modifying the MRI scanner? No, a properly designed system installs within the suite without any modification to the MRI system itself.