Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1987-03-17
1989-06-06
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324322, 333219, G01R 3320
Patent
active
048375152
ABSTRACT:
A radio frequency coil for nuclear magnetic resonance imaging comprises two annular conductors which are coaxially disposed at opposite ends of a prescribed axis and at least one pair of longitudinal conductor groups which are symmetrically disposed in parallel to the prescribed axis and extend longitudinally from one annular conductor to the other. Each longitudinal conductor group comprises a plurality of longitudinally-extending electrical conductors whose ends are secured and electrically connected to the annular conductors. The longitudinal conductors are preferably in the form of electrically conducting wires, tubes, or plates. The annular conductors can be in the form of one-piece rings or in the form of one or more pairs of arcuate plates which are electrically connected with one another and disposed about the prescribed axis in the form of a ring. Electrically conducting guard rings which are electrically insulated form the inner surface of the coil may be coaxially disposed inside the annular conductors.
REFERENCES:
patent: 4506224 (1985-03-01), Krause
patent: 4602234 (1986-07-01), Butson
patent: 4634980 (1987-01-01), Misic et al.
patent: 4680548 (1987-07-01), Edelstein et al.
patent: 4682125 (1987-07-01), Harrison et al.
patent: 4686473 (1987-08-01), Chesneau et al.
patent: 4694255 (1987-09-01), Hayes
patent: 4720680 (1988-01-01), Nishihara et al.
"An Efficient Decoupler Coil Design Which Reduces Heating in Conductive Samples in Superconducting Spectrometers". Journal of Magnetic Resonance, vol. 36, pp. 447-451, 1979.
Nishihara Susumu
Yoda Kiyoshi
Levy Stewart J.
Mitsubishi Denki & Kabushiki Kaisha
O'Shea Kevin D.
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