1. A method for compiling computer tomographic (CT) representations using a CT system with at least two angularly offset ray sources, the method comprising: scanning an object circularly or spirally using a first ray cone, the first ray cone being a first ray source of the at least two angularly offset ray sources with a relatively larger fan angle and a second ray cone, the second ray cone being a second ray source of the at least two angularly offset ray sources with a relatively smaller fan angle; generating, via the first ray cone, a first dataset A because of its absorption in the object and generating, via the second ray cone, a dataset B; supplementing the dataset B of the smaller ray cone with other data at an edge to produce an expanded dataset B+ for reconstruction of the CT representation; subjecting the expanded dataset B+ of the second, smaller ray cone and the dataset A of the first, larger ray cone to a convolution operation to produce datasets B+′ and A′; and respectively carrying out a back projection to reconstruct at least one of sectional images and volume data from the convoluted datasets B+′ and A′, wherein the dataset B is supplemented with data of the dataset A, wherein supplementary data are removed from the dataset B+′ after the convolution, but before the back projection to produce dataset B+′(−), and wherein the dataset B+′(−) is supplemented with convoluted dataset A′ for the back projection.