Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2011-08-30
2011-08-30
Koval, Melissa J (Department: 2858)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S319000, C324S320000, C600S410000, C600S411000, C600S422000
Reexamination Certificate
active
08008916
ABSTRACT:
A magnetic resonance apparatus has a cylindrical gradient coil with an x-gradient coil and a y-gradient coil that are asymmetrical relative to the z-direction of a coordinate system, the z-direction extending along a longitudinal direction of a patient receptacle. Shim coils are provided that generate magnetic fields to homogenize the basic magnetic field, produced by a cylindrical basic field magnet, in an examination volume in the patient receptacle. At least some of the shim coils are asymmetrical relative to the z-direction to minimize coupling induction between the asymmetrical x-gradient coil and y-gradient coil and the asymmetrical shim coils.
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Endt Axel vom
Riegler Jörg
Fetzner Tiffany A
Koval Melissa J
Schiff & Hardin LLP
Siemens Aktiengesellschaft
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