1. A method for producing CT images of at least one second organ cyclically excited to move by a first organ moving on its own, or examination area with rest phases and activity phases of a patient, comprising: scanning the second organ or the examination area by a gantry including at least one x-ray tube with a focus that radiates a conical beam onto to at least one opposite detector of at least one of multi-row and planar design, scanning at a relative feed rate in the z-direction between the gantry and patient in such a way that the scanned areas at least touch in the cyclically occurring rest phase; and determining a three-dimensional image of the absorption coefficient with the aid of a multiplicity of cutting planes on the basis of the data obtained by scanning in the rest phase of the second organ or examination area, wherein the movement information required to determine the rest phase is collected from the first organ, and wherein the area used for image reconstruction is varied in the cardiac cycle during a scan as a function of the distance from the heart.