In order to improve the picture quality of X-rays, a read-out control is
provided for controlling a read-out device such that a first storage
phosphor layer, which has a first thickness d1, is read out by the
read-out device controlled in a first read-out mode, and a second storage
phosphor layer, which has a second thickness d2 which is greater than the
first thickness d1, is read out by the read-out device controlled in a
second read-out mode, the second read-out mode being different from the
first read-out mode. The scan parameters of the read-out device set in
the first read-out mode are different from the scan parameters set in the
second read-out mode in at least one scan parameter. The scan parameters
are, for example, the size of the pixels, a pulse duration and/or
intensity and/or width of a focus range of stimulation light, integration
time and/or feed time of the detector.