RF shield and MRI system

Details RF shield and MRI system RF shield and MRI system

2007-01-02

2007-01-02

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S309000

Reexamination Certificate

active

10783630

ABSTRACT:
An eddy current induced in an RF shield by an X-axis gradient coil, a Y-axis gradient coil, and a Z-axis gradient coil respectively is homogeneously released to an earth ground simultaneously with induction. An RF shield is connected to a magnet via capacitors at four points whose angles are different from one another by 90°. The magnet is connected to the earth ground. An eddy current induced in the RF shield can be prevented from degrading MRI image quality.

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European Search Report; Munich; Apr. 8, 2005; Application No. EP04 25 0882; 2 pgs.
Mori et al.; “Recent Problems of Electromagnetic Technology in MRI”; 2334b IEICE Transactions on Communications E78-B Jun. 1995, No. 6, Tokyo JP; pp. 809-817.

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