Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1997-08-11
1999-11-16
Gellner, Michael L.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
324318, 600421, 600415, G01R 3320
Patent
active
059865318
ABSTRACT:
Electromagnetic shielding device for nuclear magnetic resonance apparati, having a cavity (5) with at least one or more openings for introducing the body (K) or the part thereof under examination, which cavity (5) is defined by at least one magnet (1) for generating a static field, one or more coils for generating a magnetic field gradient (2), one or more coils (3) for generating spin-exciting radio-frequency pulses, and one or more coils (4) for receiving echo signals. The transmitting (3) and receiving coils (4) are contained in an electromagnetic shielding structure (7, 7', 7"), at the openings of the detection cavity (5), whereat the shielding structure may be closed by removable shielding elements (9, 10, 18, 20), electrically connectable thereto. According to the invention, the elements (9, 10, 18, 20) for closing the shield (7, 7', 7") are at least partially provided with openings for the passage of body parts or define openings for the passage of body parts (K), and may be fastened or compressed, with a predetermined force, against said body parts (K), in such a way as to close the opening and generate a safe low-impedance electrical contact between the body (K) and said closing elements (9, 10, 18, 20).
REFERENCES:
patent: 4564812 (1986-01-01), Van Dijk
patent: 4613820 (1986-09-01), Edelstein et al.
patent: 4725781 (1988-02-01), Roschmann
patent: 4920318 (1990-04-01), Misic et al.
patent: 5028872 (1991-07-01), Nakabayashi
patent: 5050999 (1991-09-01), Van Loon, III
patent: 5735278 (1998-04-01), Hoult et al.
Magnetic Resonance in Medicine 2, 169-175 (1985); Thian C. Ng. et al.; pp. 169-175.
Barrera Raymond
Esaote S.p.A.
Gellner Michael L.
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