NMR gradient power supply including a resonant circuit having a

Details NMR gradient power supply including a resonant circuit having a NMR gradient power supply including a resonant circuit having a

1996-03-19

1997-12-23

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

1286535, G01R 3336, A61B 5055

Patent

active

057010765

ABSTRACT:
The current supply of a gradient coil in a magnetic resonance tomography apparatus with a gradient amplifier and a connectable capacitor that can be interconnected with the gradient coil to form a series resonant circuit. The gradient amplifier produces at least a part of the voltage needed for driving a predetermined gradient current through the gradient coil. The resonant frequency of the capacitor in combination with the gradient coil is lower than 1/4 T.sub.r, whereby T.sub.r is the duration of a leading or trailing edge of the gradient current.

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