Reducing image artifacts in a slice-selective magnetic resonance imaging with a plurality of readout partitions

For slice-selective magnetic resonance imaging readout partitions (210-1, 210-2) in a cyclic sequence (300) of layers (200-1, 200-2) is read out. At least two layers (200-1, 200-2) have a different number of readout partitions (210-1, 210-2) on. In all the cycles (310) of the sequence (300) is the same predetermined number of read partitions (210-1, 210-2) for the layers (200-1, 200-2) is read out. SEMAC techniques apply.