In one embodiment, an MRI apparatus includes a temperature measuring unit, a data storing unit, a pulse setting unit and an imaging unit.
The temperature measuring unit measures a temperature of a gradient magnetic field coil unit at least two times.
The data storing unit stores “shift data indicating a shift of a center frequency of magnetic resonance of a hydrogen atom in response to a variation of the temperature of the gradient magnetic field coil unit”, in advance.
The pulse setting unit determines an estimated shift of the center frequency of the magnetic resonance according to “the variation of the temperature of the gradient magnetic field coil unit based on the measurement result” and “the shift data”, and corrects a center frequency of an RF pulse based on the estimated shift.
The imaging unit performs imaging with the RF pulse whose center frequency is corrected.