MAGNETIC RESONANCE IMAGING GRADIENT DRIVER SYSTEMS AND METHODS

MAGNETIC RESONANCE IMAGING GRADIENT DRIVER SYSTEMS AND METHODS

A gradient amplifier 240 for use in a MRI system can be located in the scan room. The gradient amplifier 240 includes pair of rails connected to a gradient power supply 210. The gradient amplifier 240 also includes a H-bridge of switches S1...S4 which includes a first high side switch and a first lo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHOU, Jie, CAO, Zhenen, MA, Tao, YAO, Jiabin, CHEN, Tiezheng, WIZA, Margaret Ann, SABATE, Juan Antonio
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A gradient amplifier 240 for use in a MRI system can be located in the scan room. The gradient amplifier 240 includes pair of rails connected to a gradient power supply 210. The gradient amplifier 240 also includes a H-bridge of switches S1...S4 which includes a first high side switch and a first low side switch connected in series between the pair of rails, and a second high side switch and a second low side switch connected in series between the pair of rails. The gradient amplifier 240 further includes a first high side driver circuit, a first low side driver circuit, a second high side driver circuit, and a second low side driver circuit, each configured to drive the corresponding switch in the H-bridge. A common power source 420 supplies power to all driver circuits, wherein power is supplied to the high side driver circuits through bootstrap circuits.