Bottom line: MRI permissible if all conditions are met

Cervical Collar / Halo Vest

Safety:  Conditional

Risks:  Thermal, Displacement


  • Only MRI safe if NOT ferromagnetic.
  • Potential risk for thermal injury where hardware contacts skin. Take precautions to limit and monitor for symptoms of thermal injury


  • Test with Hand Magnet outside of Zone 4 to determine if ferromagnetic.
  • Ensure that any ferromagnetic components are insulated from skin surface.

Bottom Line: All conditions must be met to be MRI permissible.