In a method and an evaluation computer for evaluating medical data having a temporal resolution, a preprocessing phase and a postprocessing phase, are executed. The medical data include a first dataset acquired at a first time point of the temporal resolution and a second dataset acquired at a second time point of the temporal resolution. The preprocessing of the first dataset is performed in a first time period and the preprocessed first dataset is provided as an output. The preprocessing of the second dataset is performed in a second time period and the preprocessed second dataset is provided as an output, and an interactive preparation of the postprocessing is carried out in the second time period based on the preprocessed first dataset. The medical data are evaluated by postprocessing using the preprocessed first dataset and/or the preprocessed second dataset.