Patent ID: 9720066
Date: 2017-08-01
CPC Classifications: G01R

Claim:
1. A control method for a magnetic resonance imaging (MRI) apparatus, the control method comprising: applying a test gradient waveform to a magnetic assembly, by a gradient controller; measuring values of magnetic field gradients that are acquired by applying the test gradient waveform, by the gradient controller; calculating a compensation function to compensate for a distortion of the magnetic field gradients, caused by eddy currents, by accounting for an actual shape of the applied test gradient waveform, using the measured values of the magnetic field gradients and the actual shape of the applied test gradient waveform, by the gradient controller; and compensating for the distortion of the magnetic field gradients, caused by eddy currents, by executing pre-emphasis of a gradient waveform that is applied to a gradient coil unit, using the calculated compensation function, by the gradient controller.