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MRI magnet ramping service

MRI ramping is the controlled process of increasing the magnetic field until the magnet reaches its operational strength. This procedure must be performed carefully to prevent quench events, equipment damage, or system instability. Rumo Tech provides safe and monitored ramping for GE, Siemens and Philips MRI systems.
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After installation, transport, maintenance, or a quench recovery, the MRI magnet cannot immediately return to operation. The magnetic field must be increased gradually under controlled electrical and cryogenic conditions. Improper ramping may trigger a quench, damage components, or require a full cooldown procedure.

When does an MRI require ramping?

An MRI requires ramping whenever the magnet has been ramped down, lost field strength, or is being activated after installation. Facilities often notice the system is fully powered but unable to scan because the magnet field is below operational level. The console may indicate magnet standby state, ramp status messages, or incomplete system initialization. In other situations, the scanner appears operational but calibration sequences fail because the required magnetic field strength has not been reached. Ramping is also necessary after certain repairs involving cryogenics, magnet components or after transportation of the system.

Situations That Require MRI Magnet Ramping

Ramping is not a failure — it is a recovery and activation procedure. However, it becomes necessary after several specific conditions.

After a quench

A quench causes the magnet to lose superconductivity and magnetic field. After recovery and cooling, the magnet must be ramped back to operational strength.

After transport or relocation

Whenever an MRI is moved to another facility or repositioned, the magnet is typically transported ramped down and must be re-energized.

After cryogenic service

Procedures involving the cryostat, cold head, or internal components often require ramping before scanning can resume.

System installation

Newly installed MRI systems must undergo ramping and calibration before clinical operation begins.

Our MRI Ramping Procedure

After ramping, we verify magnet stability and confirm the system is ready for manufacturer calibration procedures and imaging operation. We also evaluate whether additional services such as helium refill or shimming adjustment are required.

Step 1 — Pre-Ramp Evaluation and Safety Checks

We verify cryogenic conditions, helium level, magnet temperature, and electrical supply stability. The system must be within safe parameters before increasing current in the superconducting coils.

Step 2 — Controlled Field Increase and Monitoring

The magnetic field is increased gradually using a magnet power supply while monitoring voltage, current behavior and system stability. Once nominal field strength is reached, the system is stabilized and prepared for calibration.

MRI systems and platforms we service

Our engineers support a wide range of superconducting MRI systems. Below are some of the platforms we frequently service.

Not sure about your model? Contact our engineers

Siemens

  • Siemens Magnetom Altea
  • Siemens Magnetom Aera
  • Siemens Magnetom Amira
  • Siemens Magnetom Avanto
  • Siemens Magnetom C!
  • Siemens Magnetom Espree
  • Siemens Magnetom Essenza
  • Siemens Magnetom Sempra
  • Siemens Magnetom Skyra
  • Siemens Magnetom Sola
  • Siemens Magnetom Symphony
  • Siemens Magnetom Verio

GE Healthcare

  • Signa HDxt
  • Signa Excite
  • Signa Voyager
  • Signa Creator
  • Optima MR360
  • Optima MR450w
  • Signa Brivo
  • Discovery MR750
  • Signa Architect

Philips

  • Intera
  • Achieva
  • Multiva
  • Ingenia

Not every MRI that won’t needs ramping

An MRI system may appear inactive even when the magnet field is already at operational strength. In many situations the scanner fails to start exams due to cryogenic, calibration, or configuration conditions rather than a low magnetic field.

  • System config issue

  • Low helium level

  • Pos-quench instability

  • RF calibration pending

  • Console initialization

What happens if ramping is performed incorrectly?

Unresolved magnetic field instability affects clinical reliability, workflow efficiency and operational performance.

 
 

Quench risk

Increasing magnet current too quickly can cause loss of superconductivity and a quench event.

Component stress

Improper ramping may stress coils, connections and cryogenic components, leading to future failures.

Extended downtime

A failed ramping procedure may require cooldown and recovery, delaying system availability.

Request a ramping evaluation

If your MRI system has been ramped down, relocated, or recovered from a quench, do not attempt activation without evaluation.

Send MRI system information

Response typically within one business day.

Frequently asked questions about MRI ramping

Ramping up is the controlled process of increasing electrical current to energize the MRI magnet and restore its superconducting field.

Ramping down safely discharges the magnet before relocation, maintenance, de-installation, or when major repairs are required.

Depending on magnet size, power supply, and OEM specifications, ramping can take between 4–12 hours including testing.

Improper ramping can lead to quench events, magnet coil damage, helium loss, thermal stress, and system instability.

Yes — our team has extensive hands-on experience with Siemens MRI ramping procedures and follows OEM technical guidelines.