MRI Machine Repair in Dallas: Common Faults, Downtime and Maintenance

An MRI scanner is one of the most expensive machines in a hospital or imaging center, and one of the hardest to replace when it stops. Every hour it is down means rescheduled patients and lost revenue. This guide explains what usually goes wrong with MRI systems, what your team should do when the scanner fails, and how repair and preventive maintenance work for facilities in Dallas–Fort Worth. For repairs on other imaging and clinical equipment, see our medical equipment repair services.

How an MRI system is put together

An MRI system uses a strong magnetic field and radio waves to create images, as the FDA's MRI overview explains. A repair can involve any of its main subsystems:

• The magnet and cryogen system: most clinical scanners use a superconducting magnet cooled by liquid helium, with a cold head and helium compressor that limit helium loss.
• Cooling: a chiller and water circuit remove heat from the compressor, gradient coils and electronics.
• Gradient system: gradient amplifiers and coils that encode the image.
• RF system: transmit amplifiers, receive electronics and the coils placed on the patient.
• RF shielding: the shielded room that keeps outside radio signals out of the images.
• Computers and software: the host, reconstruction computer and network connections to PACS.

Common MRI faults

Cooling and helium problems

A cold head or compressor fault lets the magnet warm slightly and raises helium boil-off. Warning signs include rising helium pressure, a falling helium level, compressor alarms and an unusual noise change from the cold head. Chiller faults, blocked filters and low water flow can trigger the same alarms or shut the system down. These faults need fast attention, because prolonged helium loss is costly to refill.

RF coil failures

Coils are handled every day, plugged and unplugged, and cleaned between patients. Cable damage, connector wear and failed elements show up as coil errors, low signal or bright and dark bands in images. Coil problems are among the most frequent MRI service calls.

Image artifacts

Zipper lines, spikes, ghosting or uneven brightness can point to an RF shielding leak, a loose connection, a failing amplifier, a coil fault or something electronic brought into the scan room. Diagnosing artifacts usually involves phantom scans and checking the room as well as the scanner.

Gradient and amplifier faults

Gradient amplifier faults can stop scanning entirely or limit which sequences will run. Overheating from a cooling problem is a common trigger.

Table, computer and software issues

Patient table drive faults, host computer failures, full disks and network problems with PACS are less dramatic but still stop the schedule.

What to do when the MRI goes down

• Keep patients and staff safe first. The magnetic field stays on even when the scanner will not image. All normal screening rules still apply.
• Never activate the emergency quench unless a person is trapped against the magnet or there is a fire or similar emergency, as set out in your facility's MR safety procedures. A quench releases the helium and can take the system out of service for an extended period.
• Write down the error codes, alarms and the helium level and pressure shown on the system or monitor.
• Note when the problem started and what was running, including which coil and sequence.
• Call for service with that information so the engineer can bring the right parts.

Safety during MRI service

MRI service is done under the same zone-based safety rules your staff follow, such as those in the ACR Manual on MR Safety. Engineers are screened before entering the magnet room, use non-magnetic tools where required, and coordinate with your MR safety officer for any work inside the room. Work on cryogens and the magnet itself requires specific training and equipment.

Preventive maintenance that reduces downtime

• Regular checks of helium level, pressure and compressor performance, with trends recorded so changes are noticed early.
• Chiller and water circuit maintenance, including filters and flow checks.
• Compressor maintenance at the intervals the manufacturer specifies.
• Daily or weekly phantom quality checks by technologists, and periodic image quality testing by a medical physicist.
• Coil inspections for cable damage and connector wear.
• RF room checks, including door seals and penetrations.
• Backups of system configuration and protocols.

Our biomedical equipment inspection service documents maintenance and testing for your records.

Repair or replace?

Older scanners can often be kept running for years with good maintenance, but parts for some discontinued systems become hard to source. When repair costs climb or a major component fails, compare the repair estimate with the cost of a replacement system and the time needed to site one. Our MRI siting and planning guide covers what replacing a scanner involves.

MRI repair in Dallas–Fort Worth

Our engineers work from our Garland headquarters. Across Dallas–Fort Worth, on-site support can usually be provided the same day, and service requests receive a response in under 8 business hours, Monday through Friday. We also provide on-site MRI service elsewhere in Texas, with visits scheduled in advance.

Mr. Biomed Tech Services is an independent service provider and is not affiliated with, licensed by or endorsed by any MRI manufacturer.

To report an MRI fault or plan maintenance, call (469) 767-8853 or contact us.