Matrix coil for generating a variable magnetic field

Electricity: measuring and testing – Particle precession resonance – Spectrometer components

Reexamination Certificate

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C324S320000

Reexamination Certificate

active

06933724

ABSTRACT:
A matrix coil for generating a variable magnetic field is provided, including a plurality of loops arranged in a series so as to have a substantially common axis and segmented into at least one arc-shaped segment, a variable current source for each of the arc-shaped segments, and a controller. The controller is configured to selectively vary an amount of current provided to each of the arc-shaped segments by the variable current sources so as to achieve a variable base field, one or more variable gradient fields, and one or more variable second order shim fields.

REFERENCES:
patent: 5530355 (1996-06-01), Doty
patent: 5554929 (1996-09-01), Doty et al.
patent: 5661401 (1997-08-01), Ishikawa et al.
patent: 6067001 (2000-05-01), Xu et al.
patent: 6492817 (2002-12-01), Gebhardt et al.

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