1. An arrangement for at least one of projective and tomographic phase-contrast imaging using X-ray radiation, comprising: at least one coherent or quasi-coherent X-ray source to generate a beam path; a measurement field in which an examination object is positionable; at least one one-dimensional phase grid with grid lines to generate an interference pattern, positioned in the beam path; a readout arrangement for the generated interference pattern, arranged downstream of the at least one one-dimensional phase grid, to detect a change in a frequency pattern during a phase scan; and a control and evaluation unit to determine gradient vectors of phase shift values for the phase scan, the phase shift values being aligned perpendicularly with respect to the longitudinal direction of the grid lines of the at least one one-dimensional phase grid and situated in the plane of the at least one one-dimensional phase grid, wherein each of the at least one X-ray source associated with one of the at least one one-dimensional phase grid and the readout arrangement being configured, relative to the examination object, to rotate about a system axis, and the at least one one-dimensional phase grid is arranged in the beam path such that, during a rotation of the at least one X-ray source, the examination object is scanned with different spatial orientations of the grid lines relative to the examination object.