Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2007-08-07
2007-08-07
Shrivastav, Brij B. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S319000
Reexamination Certificate
active
10544355
ABSTRACT:
A controlled power supply (201, 222) drives a magnetic field gradient coil (161) of a magnetic resonance imaging apparatus (10). A gradient amplifier (201) includes a plurality of switching power regulators (50, 52, 54, 56) which are electrically connected in series. A bipolar circuit (70) receives power from the series connected switching power regulators (50, 52, 54, 56) and delivers the power at a selected polarity to the gradient coil (161). A control circuit (221) delivers phase staggered pulse width modulated control signals (A, B, C, D) to the switching power regulators (50, 52, 54, 56).
REFERENCES:
patent: 3715649 (1973-02-01), Ravas
patent: 6111458 (2000-08-01), Ideler
patent: 6166602 (2000-12-01), Steigerwald et al.
patent: 6172558 (2001-01-01), Nowak et al.
patent: 6323649 (2001-11-01), Pace et al.
patent: 6683494 (2004-01-01), Stanley
patent: 7068097 (2006-06-01), Atmur
patent: 7116166 (2006-10-01), Sabate et al.
patent: 2006/0145691 (2006-07-01), Massengill et al.
patent: 198 12 069 (1999-09-01), None
patent: 19812069 (1999-09-01), None
patent: 9047445 (1997-02-01), None
Steigerwald, et al. “High-Power, High-Performance Switching Amplifier For Driving Magnetic Resonance Imaging Gradient Coils”.
Schmitt, “Gradient Systems”, pp. 477-486.
McBride Thomas R.
Trabbic Daniel T.
Koninklijke Philips Electronics , N.V.
Shrivastav Brij B.
LandOfFree
Precision gradient amplifier with multiple output voltage... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Precision gradient amplifier with multiple output voltage..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precision gradient amplifier with multiple output voltage... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3826984