Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2007-06-25
2008-11-11
Shrivastav, Brij B (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S309000
Reexamination Certificate
active
07449889
ABSTRACT:
A system and method for a magnetic resonance (MR) imaging system includes a coil form, at least one magnet positioned about the coil form and configured to generate a magnetic field, at least one gradient coil for manipulating the magnetic field generated by the at least one magnet by way of a gradient field, and a heat pipe thermally connected to the coil form and having a cryogen therein. The MR imaging system also includes a cryocooler connected to the heat pipe to cool the heat pipe and the cryogen, wherein the coil form is comprised of a thermally conductive material in which eddy currents are substantially reduced during operation of the at least one gradient coil. The present invention has been described in terms of the preferred embodiment, and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
REFERENCES:
patent: 6783059 (2004-08-01), Laskaris et al.
patent: 7260941 (2007-08-01), van Hasselt
patent: 7319327 (2008-01-01), Ryan et al.
patent: 7319329 (2008-01-01), Huang et al.
patent: 2006/0082370 (2006-04-01), Cirel
patent: 2007/0262776 (2007-11-01), Petropoulos et al.
Aksel Bulent
Amm Kathleen M.
Huang Xianrui
Laskaris Evangelos T.
Stautner Ernst W.
General Electric Company
Klindtworth Jason K.
Shrivastav Brij B
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