The Static Magnetic Field is the main magnetic field of the scanner that is always present once the magnet is ramped up to the designated field strength. This static magnetic field is always on. The most common breaches of MR safety occur due to an object being attracted to the static magnetic field. An individual may be struck, injured or trapped against the magnet by the object. Equipment may be damaged by slamming into the magnet or being struck by another object that is accelerating rapidly due to the strong attraction of the magnetic field.
All personnel, including investigators, employees, and students, who work within the MR environment, must be trained and screened for personal safety prior to entering the magnetic field. To work in the magnetic environment, it is mandatory to complete Level 1 training, complete the written safety test, and participate in an annual renewal. This includes all personnel who are conducting or assisting with MR research studies, as well as the researchers who are recruiting, scheduling, and pre-screening participants for their MR sessions.