Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2006-04-25
2006-04-25
Arana, Louis M. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C335S216000
Reexamination Certificate
active
07034536
ABSTRACT:
The present invention provides a magnetic field generator for MRI in which, by simplifying the component parts of the pole pieces incorporated therein, the magnetic field generator for MRI can be manufactured at a lower cost without detracting from its magnetic characteristics. Specifically, the present invention provides an inclined magnetic field generation coil for use in a magnetic field generator for MRI, the coil comprising a plurality of magnetic field regulating holes (17), an electric conductor in coiled form, and a resin base. Moreover, it also provides a magnetic field generator for MRI comprising a pair of permanent magnets magnetized in the direction of the thickness and opposed to each other with a gap left therebetween, and a pair of pole pieces having a peripheral projection and disposed on the opposed faces of the respective permanent magnets, in order to create a uniform magnet field space between the pole pieces, the magnetic field generator further comprising an inclined magnetic field generator (9) disposed within each of the pole pieces and having a mechanism (17) for regulating the magnetic field nonuniformity of the uniform magnet field space.
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Arana Louis M.
Myers Bigel & Sibley & Sajovec
Shin-Etsu Chemical Co. , Ltd.
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