MRI APPARATUS

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MRI APPARATUS

This abstract first appeared for US patent application 18811873 titled 'MRI APPARATUS

Original Abstract Submitted

In one embodiment, an MRI apparatus includes processing circuitry configured to continuously generate time-point data in increments of a predetermined time length; generate a series of gradient magnetic fields based on a predetermined pulse sequence; acquire an external trigger in association with trigger-time-point data corresponding to an acquisition time point of the external trigger; estimate a value of an eddy magnetic field at a second time point by using the gradient magnetic fields and respective time differences between the first time-point data and the second time-point data, wherein the respective time differences change depending on when the external trigger is acquired; calculate a frequency or phase variation of an MR signal at the second time point; and correct a frequency or phase of an RF transmitting signal or the MR signal, by using the calculated frequency variation or the phase variation.