Mobile, Point-of-Care & Remote MR Safety

Safety Travels With the Scanner

A mobile trailer, point-of-care system, intraoperative magnet or remote operating arrangement changes the physical workflow. It does not eliminate static-field, equipment, RF, access or patient-care risks. The assistant must learn the particular system and site plan rather than transfer room numbers, floor stripes or button locations from a familiar department. A lower field can reduce some risks but is not a universal clearance for an implant or ordinary equipment. The manufacturer and local MR safety team define the conditions of use.

Mobile Trailers and Temporary Sites

A mobile unit may put reception, changing, scanning and emergency support in different structures. The access plan must cover the route between them. Verify where screening takes place, where unscreened transport equipment stops, where belongings are secured and who monitors each restricted doorway. Protect the patient from falls on ramps, lift platforms, steps and thresholds. Table and stretcher limits still apply, and an ordinary hospital lift is not automatically safe near the magnet.

Ask where the field extends beside, above and below the unit. Public walkways, parked vehicles, service access and adjoining rooms may need controls. Follow the assessed field map and signs. Do not move a magnetic boundary to create a convenient waiting area or allow an oxygen cylinder to stand beside a trailer wall without review. Ensure external contractors and delivery personnel know the restricted entry procedure; an open loading or service door can defeat an otherwise good screening workflow.

Point-of-Care and Intraoperative Systems

A bedside scanner may sit near monitoring equipment, pumps, surgical tools and patients with complex devices. Confirm the exact device and environmental conditions, including any designated exclusion area. Screen the patient, staff and accessories for that system; portability and appearance do not establish universal MR safety. Maintain the local access barrier while the equipment is moved or operated. Only authorized personnel reposition the scanner or change its configuration.

In intraoperative MR, a moving magnet or changing room configuration can alter which equipment becomes exposed to the field. The assistant follows the team time-out and count/check process before the transition. Equipment that was acceptable during one phase is not automatically permitted during another. The responsible team coordinates sterile technique, airway access and life support. Do not remove barriers, disconnect devices or bring surgical instruments across the assessed boundary without the transition plan.

Remote Operation and Local Responsibility

A remote technologist may operate the scanner, but the patient remains physically at the imaging site. The 2026 ACR manual recommends a remote Level 2 MR technologist, at least one on-site Level 2 MR technologist, and additional on-site Level 1 or Level 2 personnel. Each patient in Zone IV needs a dedicated on-site Level 2 monitor who communicates with the patient and remote operator. These recommendations are distinct from ARRT's eligibility requirements and permission for certain competencies to be observed live by video/audio.

An I.A.(MR) assistant can contribute to authorized monitoring and support after role-specific training, but does not replace the MR technologist or acquire images. The team must identify who screens, verifies conditions, positions, checks leads and padding, monitors symptoms, activates help and controls the entrance. A general assurance that someone is online is not a complete staffing or response plan. The remote operator needs accurate information about patient condition and every setup change before resuming acquisition.

Testing Connectivity and Handling Outages

Before patient entry, check the designated audio, visual and patient-alert connections with both local and remote staff. Verify that the remote operator can identify the patient and scanner and the local team can reach them immediately. Use only approved systems; personal phones and ad hoc video services are not substitutes for validated clinical connectivity or secure information handling. Ensure the emergency response does not rely entirely on the same network that supports scanning.

If video, audio, internet or control connectivity fails, use the predefined workflow. Notify the local technologist, stop or request a stop as the system and training permit, assess the patient and maintain direct local observation. If safe monitoring cannot be maintained, withdraw the patient under the local procedure. Do not leave them isolated in the bore while troubleshooting or continue from memory because the scan appears nearly finished. Preserve access controls and essential monitoring during the interruption.

After recovery, reconcile the patient, scanner state, orders and completed work. The technologist determines whether acquisition can resume; support staff do not assume a frozen display reflects the actual table or sequence status. Record the disruption and actions through the local quality process, particularly if patient care, screening information or equipment status was affected. During drills, rehearse the route to the magnetically safe resuscitation area and the means of summoning help during total network loss.