Magnetic resonance imaging gradient driver systems and methods

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

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Hauptverfasser:	Wiza, Margaret, Yao, Jiabin, Zhou, Jie, Sabate, Juan, Cao, Zhenen, Ma, Tao, Chen, Tiezheng
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PULSE TECHNIQUE TESTING
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creator	Wiza, Margaret Yao, Jiabin Zhou, Jie Sabate, Juan Cao, Zhenen Ma, Tao Chen, Tiezheng
description	A gradient amplifier for use in a MRI system can be located in the scan room. The gradient amplifier includes pair of rails connected to a gradient power supply. The gradient amplifier also includes a H-bridge of switches 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 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 supplies power to all driver circuits, wherein power is supplied to the high side driver circuits through bootstrap circuits.
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subjects	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PULSE TECHNIQUE TESTING
title	Magnetic resonance imaging gradient driver systems and methods
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