1. A detection values correction apparatus for correcting detection values of a projection image of a multi-energy imaging system comprising a radiation source for emitting radiation for traversing an object and a detection unit comprising a detection surface for generating the detection values depending on the radiation after having traversed the object, wherein a detection value represents an intensity, an energy and a location on the detection surface, wherein the detection values correction apparatus comprises: a scatter contribution providing unit for providing scatter contributions for different intensities, different energies and different locations on the detection surface of the detection values, wherein a scatter contribution represents the contribution of the scatter, which is generated by radiation of a detection value representing an intensity, an energy and a location on the detection surface, to the detection value to be corrected, a scatter contributions combining unit for combining scatter contributions for correcting a detection value, wherein the combined scatter contributions represent the contribution of the scatter, which is caused by radiation of the other detection values of the projection image, to the detection value to be corrected and wherein the scatter contributions are combined under consideration of the intensity, energy and location on the detection surface of the other detection values, a correction unit for scatter correcting the detection value of the projection image by using the combined scatter contributions.