RF magnetic shield for MRI

Details RF magnetic shield for MRI RF magnetic shield for MRI

1993-04-09

1995-03-07

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

335301, G01R 3328

Patent

active

053961730

ABSTRACT:
Disclosed is an RF magnetic shield for magnetic resonance imaging apparatus having a gradient coil and an RF coil allocated in a generally cylindrical magnet of the apparatus. The RF magnetic shield comprises conductive shielding plate members, disposed between the gradient coil and the RF coil, through which long slits are formed, and capacitors connected to both the longitudinal ends of the slits, respectively. Each of the capacitors consists of a multilayer capacitor, which is a larger capacitance and is continuously and electrically connected to both the longitudinal ends of the respective slits.

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"Shield for Decoupling rf and Gradient Coils in an NMR Apparatus," K. Yoda, Japanese Journal of Magnetic Resonance in Medicine, vol. 9, No. 1, pp. 86-89 (1989).
"A method of removing noise from electronic devices," S. Nitta, pp. 69-72, 197-200 (1986).

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