resolution in detector technology the total mtf can be documented as a quality feature of the arrangement for one or more given operating states parameters of the operating state are in particular the power of the particle beam the magnification and the adjusting value or values of the focusing device fig8 shows the radiograph and the view of the two structures in accordance with fig6 and fig7 if they are arranged one behind the other in the manner of the calibration object in accordance with fig5 in the beam path it can be discerned that the structures having the smaller dimensions and the structures having the larger dimensions are imaged in each case in four solid angle ranges with a circle segment shaped cross section if by way of example the structure in accordance with fig7 is evaluated in order to determine the image resolution and or the contrast present in a radiograph it is possible as indicated in fig7 to effect evaluation along the two arrow lines 91 92 perpendicular to one another in this case the directions of the arrow lines 91 and 92 can correspond to the directions of the rows and columns of the individual detectors of the image producing device therefore for example.