METHOD AND APPARATUS FOR MEASURING MAGNETIC FIELD

摘要

A magnetic field measuring method in a magnetic resonance imaging (MRI) apparatus includes applying a radio frequency (RF) pulse to an object, acquiring first and second echo signals from a first readout gradient according to test gradients having different intensities, acquiring third and fourth echo signals from a second readout gradient according to the test gradients having different intensities, and determining a characteristic value of an eddy field based on an echo time (TE) of at least one of the first through the fourth echo signals.

主权项

1. A magnetic resonance imaging (MRI) apparatus for measuring a magnetic field, the MRI apparatus comprising:
a radio frequency (RF) transmitter configured to apply an RF pulse to an object; a gradient amplifier configured to apply test gradients having different intensities; an RF receiver configured to acquire a first echo signal and a second echo signal from a first readout gradient and acquire a third echo signal and a fourth echo signal from a second readout gradient, according to the test gradients; and an eddy current compensation processor configured to determine a characteristic value of an eddy field based on an echo time (TE) of at least one of the first through the fourth echo signals.