Patent ID: 9689953
Date: 2017-06-27
CPC Classifications: G01R

Claim:
1. A method of operating a magnetic resonance imaging (MRI) system having a gradient coil and a radio frequency (RF) coil, the method comprising: generating, by the MRI system, a gradient magnetic field in a scanning space where a target object is positioned by generating a plurality of modified gradient pulses based on a reference gradient pulse and applying one of the plurality of modified gradient pulses to one of an x-axis coil, a y-axis coil, and a z-axis coil included in the gradient coil; applying, by the MRI system, a radio frequency (RF) pulse from the RF coil to the target object in the scanning space where the gradient magnetic field corresponding to each of the plurality of modified gradient pulses is generated, and receiving a plurality of RF signals that are generated from the target object and correspond to the plurality of modified gradient pulses; compensating, by the MRI system, an output of the gradient coil based on the plurality of received RF signals; responsive to the compensating, generating and transmitting, by the MRI system, a modified gradient pulse signal to the gradient coil; and generating, by the MRI system, a modified gradient magnetic field by the gradient coil using the modified gradient pulse signal, wherein, in the compensating of the output, the output of the gradient coil is compensated based on a difference between the reference gradient pulse and a modified gradient pulse corresponding to one of the plurality of received RF signals that has a largest amplitude.