Dynamic magnetic resonance imaging with variable contrast

A magnetic resonance (MR) apparatus comprising:

• an MR scanner adapted to receive an examination object that performs a cyclic cardiac movement, with each cycle in said cyclic respiratory movement, with each cycle in cyclic cardiac movement being divisible into successive movement phases, said movement phases being comparable from cycle-to-cycle;
• a control computer configured to operate said MR scanner, while the examination object is situated in the MR scanner, to acquire MR signals from the examination object over at least two cycles of said cyclic movement by acquiring, in each of said at least two cycles, a plurality of MR data sets respectively for a plurality of MR images wherein, over said at least two cycles, a magnetization given to nuclear spins of the examination object, that influences said MR data sets, is changing toward a state of equilibrium of said nuclear spins and wherein, in a second data set of said at least two cycles, said magnetization is closer to said state of equilibrium than in a first of said at least two cycles;
• said control computer being configured to determine movement representing the respective movement phases in the second of said cycles, using the MR data sets acquired during said second of said cycles, with said movement information of the examination object being determined individually for each of said respective movement phases in the second of said cycles;
• said control computer being configured to execute a movement correction for correcting for said cyclic movement of said examination object in said first of said cycles by applying said movement information individually for the respective movement phases of the cyclic movement in said first of said cycles using the movement information determined individually for the respective movement phases in the second of said cycles;
• said control computer being configured to reconstruct MR images of the respective movement phases of said first of said cycles by executing a movement-corrected reconstruction wherein movement of the examination object in each of said movement phases of said first cycle is corrected using said movement information determined for said movement phases of said first of said cycles;
• and
• said control computer being configured to provide the reconstructed MR images at an output of said control computer in electronic form, as an image data file.