Magnetic resonance apparatus

Details Magnetic resonance apparatus Magnetic resonance apparatus

1993-05-04

1995-01-17

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01R 3320

Patent

active

053829034

ABSTRACT:
A radio frequency signal detector coil arrangement (17) for a magnetic resonance apparatus comprising a planar coil (25) and an annular magnetic flux rejecting arrangement (25) disposed coaxially with the planar coil, on one side thereof, which reduces the sensitivity of the planar coil to signals from sources remote from the axis of the planar coil. One embodiment of the flux reducing arrangement comprises an annular superconducting member (35) disposed between the planar coil and the body (31). In other embodiments it comprises an arrangement of coils which conform to a tubular surface coaxial with the planar coil, and electrically connected therewith.

REFERENCES:
patent: 4636730 (1987-01-01), Bottomley
patent: 4714887 (1987-12-01), Meissner et al.
patent: 4839595 (1989-06-01), Boskamp
patent: 4926125 (1990-05-01), Roemer
patent: 5091708 (1992-02-01), Bezjak
patent: 5196796 (1993-03-01), Misic et al.
patent: 5280248 (1994-01-01), Zou et al.

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