Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2010-08-23
2011-10-04
Arana, Louis M (Department: 2858)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S318000
Reexamination Certificate
active
08030932
ABSTRACT:
An apparatus for use in a magnetic resonance examination includes a radio frequency receive coil (50) and adjustable tuning circuitry (51) for adjusting the resonant frequency of the receive coil. The apparatus also includes a preamplifier (29) which amplifies signals generated by the receive coil. An adjustable feedback circuit (31) alters an effective Q of the receive coil.
REFERENCES:
patent: 5051700 (1991-09-01), Fox
patent: 5488382 (1996-01-01), Fenzi et al.
patent: 6369550 (2002-04-01), Lou et al.
patent: 7782059 (2010-08-01), DeVries et al.
patent: 2003/0234684 (2003-12-01), Oppelt
patent: 2006/0033499 (2006-02-01), Flexman et al.
patent: 05-048347 D3 (1993-02-01), None
D.I. Hoult, Fast recovery, high sensitivity NMR probe and preamplifier for low frequencies, Review of Scientific Instruments, Feb. 1979, vol. 50, issue 2, pp. 193-200, abstract provided.
Chang, et al., Stability and Noise Performance of Constant Transimpedance Amplifier with Inductive Source, IEEE Transactions on Circuits and Systems, Feb. 1989, pp. 264-271, vol. 36, No. 2.
California Eastern Laboratories, NEC GaAs HJ-FET L to S Band Low Noise Amplifier (New Plastic Package) NE38018, Oct. 11, 2000, 9 sheets.
R. Venook et al., Autouning Electronics for Varactor Tuned Flexible Interventional RF Coils, Proc. Intl. Soc. Mag. Reson. Med. , vol. 10, p. 893, conference abstract.
Burr-Brown Products From Texas Instruments, Wideband, Low Distortion, Unity-Gain Stable, Voltage-Feedback Operational Amplifier OPA842, Nov. 2002—revised Dec. 2002, 23 sheets.
Albert Macovski, Novel Cryoelectronic Receiver Design for High Q Coils, NCRR Final Report Grant R21 HL60328, Mar. 12, 2003, pp. 1-16.
Burr-Brown Products From Texas Instruments, Wideband, Low Distortion, Medium Gain, Voltage-Feeback Operational Amplifier OPA843, Dec. 2002-Oct. 2003, 25 sheets.
International Search Report Re: PCT/US2005/042500, 4 sheets.
DeVries Jon T.
Flicek Joseph R.
Gao Erzhen
Scott Greig
Vij Kamal
Arana Louis M
Driggs, Hogg, Daugherty & Del Zoppo Co., LPA
m2m Imaging Corporation
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