In a method and apparatus for acquiring magnetic resonance data of an acquisition region of a patient, in particular at least a part of the head of the patient, navigator data are acquired for motion correction, between diagnostic data acquisition time windows, in navigator time windows by execution of a fat navigator sequence. The fat navigator sequence has a fat-selective excitation module with at least one radio-frequency pulse and a readout module undersampling in a respective navigator slice. Motion data for the motion correction of the diagnostic data are determined from the navigator data. The navigator data are acquired simultaneously from multiple excited fat navigator slices in the fat navigator sequence using simultaneous multislice imaging, after the excitation module acts on a number of fat navigator slices to be acquired in the readout module.
