A slotted plate is for limiting an incident x-ray radiation. The slotted plate includes at least one slotted opening and two different x-ray filter regions for x-ray spectrum differentiation of the incident x-ray radiation. The two different x-ray filter regions are permanently arranged in the region of the at least one slotted opening such that radiation portions of the x-ray radiation penetrating the slotted opening having different x-ray spectra can be generated simultaneously. A radiator screen, an x-ray radiator for generating a radiation beam fan, a computer tomography device having such an x-ray radiator, and a method for controlling such a computer tomography device are also disclosed.
