Gradient coil power supply and imaging method

Details Gradient coil power supply and imaging method Gradient coil power supply and imaging method

1995-02-03

1996-05-28

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324318, G01V 300, G01V 314

Patent

active

055215076

ABSTRACT:
In a magnetic resonance imaging system in which the read and phase directions are rotated with respect to the orthogonal gradient coil directions, a gradient coil is driven to generate a gradient waveform having a segment, either sinusoidal or linear, that approximates the sum of the simultaneous non-zero components of the read and phase gradient waveforms in the direction of the gradient coil. Resonant circuits, each including a gradient coil, generate simultaneous periodic gradient coil waveforms in which the integral over each waveform period is non-zero. First and second capacitive elements in the resonant power supply are electrically connected to the gradient coil through a switch and a bridged network, respectively. The bridged network selectively provides current flow paths between the coil and either of the terminals of the second capacitive element.

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