Mrt - security against the direction of the means

摘要

A magnetic screening device (msm) to prevent the penetration of metallic objects by means of an aperture towards the open bore of an mrt - device (mrd), where the magnetic field (b) is maximized; wherein said mrd is ready for operation, a umsäumendes magnetic field (b_{F / l}) to produce, with increasing distance (l) of said aperture is weaker; wherein said msm at least one magnet having a magnetic field b_Msm ; wherein said msm at a distance l_Msm from said aperture of the mrd is attached; and wherein for each distance l b_Msm B_{F / l} is.