1. A method for a three-dimensional representation of a structure moved or influenced by a periodic process, comprising: rotating an imaging unit a predefined angular range of rotation about a structure, wherein N number of rotations comprising at least two rotations are executed in succession, wherein starting angles of the rotations have an offset with regard to one another based upon a predefined differential angle, wherein the predefined differential angle comprises the angular range of rotation divided by the N number of rotations; recording a plurality of projection images for each N number of rotations from different projection angles between a starting angle and an end angle during rotation of the imaging unit in accordance with the predefined differential angle; for a selected point in time t c after starting each N number of rotations, defining a time interval of t 1 to t 2 to include a phase range of interest of the periodic process based on the N number of rotations, wherein an interval duration is T/N, wherein t 1 =t c −T/2N and t 2 =t c +T/2N, wherein T is a duration of a rotation, and wherein N is the number of the rotations; combining into an image series of during the time interval of t 1 to t 2 representing the phase range of interest; and reconstructing a three-dimensional image data record based upon projection images assigned to the phase range, wherein the three-dimensional image data record shows the structure in the phase range of the periodic process.