Magnetic Resonance Imaging Environment Safety in Ontario

With the increase prevalence of MRI exams in Ontario, the emerging use of MRI for image guided surgery, and the higher field strength MRI machines used for exams, it is important to address the potential risks to patient and staff safety in the MR environment.

The purpose of this study is to investigate the level of safety maintained at MR facilities in Ontario, assess the MR safety literature, and provide recommendations to OHTAC on maintaining a high level of safety at MR sites in Ontario. The scope of this study was focused on the MR environment, including the region from the centre of the magnet bore and extends out to the patient waiting and reception areas. The environment is divided into four zones as defined by the American College of Radiology.

Recommendations for the MRI Safety Committee’s consideration include:

1. Use the updated MRI categorization: MR Safe, MR Conditional, MR Unsafe
2. Strictly control access to the MR environment
3. Clearly indicate the 5G perimeter on the floor surrounding the scanner
4. Assign a permanent location for equipment in the magnet room
5. Use consistent MR labels on equipment used in the MR environment
6. Use consistent MR signs that clearly indicated the hazards of the MR environment
7. Require outpatients undergoing MRI scans to change into hospital gowns without metal fasteners
8. Provide annual training for personnel working in the MR environment

Publications: 

Magnetic Resonance Imaging Environment Safety in Ontario (1.1 MB)
Date of isue: June 21, 2006