1. A method for operating a medical diagnostic apparatus comprising the steps of: in an examination, placing a region of an examination subject in an imaging volume of a diagnostic apparatus and obtaining a first dataset of said region of interest by operating said diagnostic apparatus with a first set of operating parameters, and storing said first set of operating parameters and said first dataset; and in a follow-up examination, after said examination, again placing said region of interest in said imaging volume, and obtaining a follow-up dataset of said region of interest by operating said diagnostic apparatus with the stored, first set of operating parameters, and storing said follow-up dataset.