1. A method for magnetic resonance (MR) imaging, comprising the steps of: with a computerized control unit, operating an MR data acquisition device to implement at least one first acquisition sequence comprising a first acquisition sequence inversion pulse that excites nuclear spins in an examination subject and at least two successive first acquisition sequence read out steps in which MR data are acquired from a first slice of the examination subject, said MR data from said first slice representing T 1 relaxation in said first slice following said excitation of nuclear spins by said first acquisition sequence inversion pulse; with said computerized control unit, operating said MR data acquisition device to implement at least one second acquisition sequence, which is temporally offset from and which at least partially temporally overlaps said first acquisition sequence, comprising a second acquisition sequence inversion pulse that excites nuclear spins in the examination subject and at least two successive second acquisition sequence readout steps in which MR data are acquired from a second slice of the examination subject, said MR data from said second slice representing T 1 relaxation in said second slice following excitation of nuclear spins by said second acquisition sequence inversion pulse; and supplying said MR data from said first slice and said MR data from said second slice to a computerized processor and, in said computerized processor, generating a data file comprising said MR data from said first slice and said MR data from said second slice, as a data file in a form for electronic processing.