To correct an NMR image data obtained under the existence of the movement of a patient.

During a gated cardiac MRI scanning 322, a navigator signal is obtained 324 and 326 to measure the position component and velocity component of respiratory movement. An obtained heart image view is anulled and/or corrected based on the measurement of the position component and velocity component of the respiratory movement to reduce motion artifact. In one performing example, a navigator pulse sequence includes encoding gradient, and in a second performing example, the velocity is decided by measuring the vibration in the position of a diaphragm between continuing navigator pulse sequences.