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Controlled access to the MRI environment


Access to the MRI control room or beyond is controlled by MRI technologists or MRI radiologists


+ Importance of caution in the MRI environment

  • The MRI magnet is very powerful, capable of moving and dislodging ferro-magnetic objects of all sizes towards the field, potentially causing significant injury and/or death.1-3
    • Loose metallic objects can become projectiles in the presence of the strong static magnetic field, and are prohibited in the MRI magnet room1
    • Some implants/devices are unsafe and may cause harm to the individual


  • The magnet is always on, even if the facility has no power.

+ Access to the MRI environment

  • Only MRI technologists and MRI radiologists are authorized to freely access the MRI control room and magnet room.
    • Access for all other professionals is controlled by MRI technologists or MRI radiologists


  • MRI-safety standards dictate that any individual entering the MRI magnet room must be carefully screened using an MRI safety screening form and undergo a verbal double check.1-3
  • Performance of the screening is restricted to those with the necessary professional training in MRI-safety procedures.
  • If there are any questions or concerns, the MRI technologist or radiologist should be consulted.

+ References

  1. Shellock FG. Reference Manual for Magnetic Resonance Safety, Implants, and Devices. 2010 Ed. Los Angeles, CA: Biomedical Research Publishing Group; 2010.
  2. Westbrook C, Kaut Roth C, Talbot J. MRI in Practice. 3rd Ed. London, UK: Blackwell Publishing Ltd.; 2005.
  3. Kanal E, et al. American College of Radiology White Paper on MRI safety. AJR 2002;178:1335-1347.
  4. Institute for Magnetic Resonance Safety, Education and Research. Guidelines for screening patients for MR procedures and individuals for the MR environment. Available at: Accessed March 21, 2011.




May 15, 2012


Canadian Association of Medical Radiation Technologists
85 Albert St, Suite 1000, Ottawa, ON, K1P 6A4
phone: 613 234-0012 / 800 463-9729
fax: 613 234-1097