The stationary magnetic field B 0 of an MR scanner can be extremely strong: Superconducting magnets easily attain field strengths of 1.5–3.0 T (15,000–30,000 Gauss). This magnetic field bears great risks for both female and male patients, as well as for the staff operating the magnet. Ferromagnetic items in the vicinity of the magnet are particularly hazardous. They can become dangerous missiles (“missile effect”).
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