1. A method for navigating in three-dimensional electronic image data records, the image data records including three-dimensional partial image data records, the method comprising: optically displaying at least two mutually perpendicular two-dimensional projections of an image data record, at least one of the two projections including at least one two-dimensional partial projection of at least one partial image data record; optically emphasizing the at least one two-dimensional partial projection; functionalizing the at least one optically emphasized partial projection such that the at least one optically emphasized partial projection is selectable by a user input; receiving a user input directed toward the selection of at least one partial projection functionalized in such a way; and automatically displacing, as a function of the user input, the at least one projection not including the at least one partial projection in such a way that it includes the partial projection after displacement.