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.