1. A method for displaying changes in medical image data, comprising: acquiring at least two medical anchor image datasets representing medical image data at different points in time; determining at least one object of interest in at least one of the anchor image datasets and modifying the at least one anchor image dataset to harmonize the anchor image datasets by harmonizing reference objects in the anchor image datasets such that differences of a reference object in different anchor image datasets are compensated, wherein the object of interest is excluded from the modification and re-inserted into the modified anchor image dataset; determining at least one transformation, wherein the at least one transformation describes a transition from one anchor image dataset to a temporally consecutive anchor image dataset after the harmonization; calculating at least one intermediate image dataset representing intermediate image data by using the transformation; and displaying the medical image data represented by the anchor image datasets and the intermediate image dataset(s) as an image sequence.