A method for adjusting a gray scale value, calculation program, calculation unit, X-ray apparatus and data carriers

The invention relates to a method for adjusting the length and the position of a central value of a gray scale value for imaging with an X-ray apparatus (1) based on the X-ray apparatus (1) calculated CT values, (which adaptation in the context of determining and setting a receiving tube voltage The invention also relates to a process that converts the computer program (13) and a computing unit (12), an X-ray apparatus (1) and a disk (14, 15) having such a computer program (13).