Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2005-11-18
2009-08-25
Shrivastav, Brij B. (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S318000, C324S319000
Reexamination Certificate
active
07579838
ABSTRACT:
Systems, methods and apparatus are provided through which a partially elongated field-of-view in a magnetic resonance imaging system is generated either by an asymmetric primary coil or a conventional symmetrical primary coil with a supplementary high odd-order shim that elongates the field-of-view towards one end of the bore. For significantly increased efficiency, the high odd-order shim can evoke specific parts of the primary coil by injecting additional current and/or subtracting current from specific turns, as required.
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Fetzner Tiffany A
General Electric Company
Shrivastav Brij B.
Smith, Esq. Michael G.
Tibbetts, Esq. Jean
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