GRADIENTFOERSTAERKARSYSTEM VARI FOERSTAERKARNA ANVAENDS FLEXIBELT

A magnetic resonance imaging system uses a pool of amplifiers (42) to generate gradient signals. Each amplifier (42a,b,c,d) within the pool may be switched among any of the gradient axes, so as to efficiently allocate amplifier power among the gradients. In one embodiment, the amplifiers (42) of the...

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Bibliographische Detailangaben
Hauptverfasser:	VAVREK, ROBERT MICHAEL, MCFARLAND, THOMAS GEORGE
Format:	Patent
Sprache:	fin
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY DIAGNOSIS ELECTRICITY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEDICAL OR VETERINARY SCIENCE PHYSICS SURGERY TESTING
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Beschreibung
Zusammenfassung:	A magnetic resonance imaging system uses a pool of amplifiers (42) to generate gradient signals. Each amplifier (42a,b,c,d) within the pool may be switched among any of the gradient axes, so as to efficiently allocate amplifier power among the gradients. In one embodiment, the amplifiers (42) of the pools are connected in stacks (19) by an input and output matrix comprised of mechanical switches driven in tandem by interlocked motors. The switches connect the outputs of the amplifiers in series. The input signal is "boot strapped" through the amplifier stack to provide proper signal level.