Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2007-03-30
2008-08-19
Shrivastav, Brij B (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S322000
Reexamination Certificate
active
07414402
ABSTRACT:
An RF coil apparatus suitable for a high magnetic field MRI apparatus includes a plurality of subcoils arranged substantially in a cylindrical form. Each subcoil includes a first conductor part and a second conductor part. The second conductor part is disposed on the inside of a cylinder, i.e., on the test subject side. This coil apparatus includes a conduction part for attaining conduction among the subcoils, and a conduction control part for controlling a conduction state between the first conductor part and the second conductor part, conducting connection to a transmission and reception part which conducts signal transmission and reception with a subcoil, and changing over electric capacitance of the subcoil according to whether to receive or transmit. Function changeover between the multi-channel mode and the one-channel mode is accomplished by conducting connection changeover and electric capacitance changeover.
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Habara Hideta
Ochi Hisaaki
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Hitachi , Ltd.
Reed Smith LLP
Shrivastav Brij B
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