To adapt with low outlay to different patient sizes, an X-ray mammography machine is disclosed, including a digital, substantially rectangular flat solid state detector delimited by two parallel longitudinal edges and two parallel, shorter transverse edges. The flat solid state detector can be adjusted in such a way that a longitudinal edge can be positioned parallel to a chest wall of a female patient in a first position, and a transverse edge can be positioned parallel to the chest wall of the female patient in a second position.