GaussAlert - Magnetic Field Strength Alarm System - Application Note

Kopp Development, Inc. has selected three standard product alarm point configurations: 10 gauss (0.1 mT), 30 gauss (0.3 mT), and 100 gauss (1 mT) for the GaussAlert™ Magnetic Field Strength Alarm System. These configurations were selected based on a number of published papers cited in this Application Note. While there are differences in the exact location of the gauss lines for each magnet manufacturer and field strengths, the 5 gauss line has been recommended as the demarcation for Zone III, restricted to screened MR patients and MR personnel and where free access by non-MR personnel with ferromagnetic objects or equipment can result in serious injury or death as a result of the interaction of the object or equipment and the magnet???s environment as noted in the ACR Guidance Document for Safe MR Practices: 2007 published in the American Journal of Radiology, 2007; 188:1-27.