Detection of ferromagnetic objects approaching a magnet

Details Detection of ferromagnetic objects approaching a magnet Detection of ferromagnetic objects approaching a magnet

2003-04-15

2008-08-19

Assouad, Patrick (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetic field detection devices

C324S234000, C324S239000, C324S207260, C340S551000, C340S540000

Reexamination Certificate

active

07414400

ABSTRACT:
An apparatus for detecting a potentially dangerous ferromagnetic object carried inadvertently by a person approaching the magnet of a magnetic resonance imaging system (14) uses the fringe field (16) of the magnet and provides guide members (11) defining a path along which the person is prescribed to pass. The path (11) is generally or approximately parallel to the field the path. At least one sense coil and generally two sets of sense coils (12, 13) are located on respective sides of the path (11) s the movement of the ferromagnetic object in the field of the magnet causes a voltage to be generated in the sense coil.

REFERENCES:
patent: 3573817 (1971-04-01), Akers
patent: 3971983 (1976-07-01), Jaquet
patent: 4060039 (1977-11-01), Lagarrique
patent: 4795995 (1989-01-01), Eccleston et al.
patent: 4990850 (1991-02-01), Votruba
patent: 5841346 (1998-11-01), Park
patent: 6133829 (2000-10-01), Johnstone
patent: 6150810 (2000-11-01), Roybal
patent: 6337627 (2002-01-01), Von Gutfeld et al.
patent: 6362739 (2002-03-01), Burton
patent: 6567685 (2003-05-01), Takamori et al.
patent: 7106056 (2006-09-01), Czipott
patent: 7113092 (2006-09-01), Keene
patent: 2003/0171669 (2003-09-01), Kopp
patent: 43 01 611 (1994-07-01), None
patent: 199 12 407 (2000-09-01), None

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