Gradient coil system for a nuclear magnetic resonance tomography

Details Gradient coil system for a nuclear magnetic resonance tomography Gradient coil system for a nuclear magnetic resonance tomography

1992-02-03

1993-08-10

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, 1286535, G01R 3320

Patent

active

052352838

ABSTRACT:
The supply of current pulses to gradient coils in a magnetic resonance imaging tomography apparatus results in physical vibration of the coils, causing acoustic noise. For reducing such acoustic noise, a gradient coil system is disclosed wherein the individual gradient coils are secured on a tubular carrier formed by a two concentric shells. The two shells are joined to each other in a manner which is rigid against shearing in the longitudinal direction by connector elements. The self-excited vibrational behavior of the gradient coil system is thereby tuned to lower vibrational amplitudes and to higher vibrational frequencies, so that a more effective damping can be achieved with acoustic damping measures.

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