Quadrature coil construction

Details Quadrature coil construction Quadrature coil construction

1990-04-26

1991-10-15

Williams, Hezron E.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01R 3320

Patent

active

050577778

ABSTRACT:
A coil system particularly for a wrist for use in an NMR imaging system comprises first and second planar U-shaped rectangular parallel coils. The extended legs of the U-shapes are interconnected to form third and fourth rectangular U-shaped planar coils oriented normal to the plane of the first and second coils to form a rectangular polyhedron coil configuration. A support arrangement for the coils receives a wrist to be imaged and assists in aligning the wrist relative to a body coil of the NMR system. Impedance matching and tuning circuits selectively apply and receive signals from the coils in quadrature.

REFERENCES:
patent: 4695801 (1987-09-01), Arakawa et al.
patent: 4766383 (1988-08-01), Fox et al.
patent: 4783629 (1988-11-01), Arakawa et al.
patent: 4816765 (1989-03-01), Boskamp
patent: 4879516 (1989-11-01), Mehdizadeh et al.
Partain, Price, Patton, Kulkarni, and James, "Radio Frequency Resonators", Magnetic Resonance Imaging, 2nd Edition, 1988, pp. 1194-1198.

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