Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2007-04-10
2010-12-14
Shrivastav, Brij B. (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S307000
Reexamination Certificate
active
07852083
ABSTRACT:
An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1at the center portion of the imaging space is larger than the diameter r2of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.
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Kurome Akira
Takeuchi Hiroyuki
Yatsuo Takeshi
Cooper & Dunham LLP
Hitachi Medical Corporation
Shrivastav Brij B.
Vargas Dixomara
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