A method is disclosed for determining and displaying perfusion parameters. In at least one embodiment, the method includes measuring an arterial contrast agent profile measuring a contrast agent profile in a tissue of an organ temporally synchronizing measured values of the arterial contrast agent profile and the contrast agent profile by interpolation fitting a theoretical parameterized contrast agent profile to the measured contrast agent profile in the tissue by minimizing the differences between the theoretical and measured contrast agent profiles over a multiplicity of times in a measurement interval by fitting function parameters and determining at least one perfusion parameter from the function parameters in the case of minimal deviation between the theoretical and measured contrast agent profiles.
