Medical x-ray devices and methods for operating medical x-ray devices

A medical X-ray device configured to perform an X-ray examination, the device comprising:

• a recording unit configured to record at least one first X-ray image of a body region as a mask image and record a second X-ray image of the body region;
• a providing unit configured to provide a first subsequent image of the body region, wherein the second X-ray image represents the body region at a later recording time than the first subsequent image;
• a first determining unit configured to determine a degree of deviation relating to a deviation between the first subsequent image and the second X-ray image;
• a second determining unit configured to determine an averaging amount in dependence on the degree of deviation according to a predetermined rule;
• a generating unit configured to generate a second subsequent image from the second X-ray image or from the first subsequent image together with the second X-ray image, wherein the averaging amount specifies proportions in which the first subsequent image and the second X-ray image are to be mixed thereby by the generating unit;
• and
• a combining unit configured to form an overall image from the mask image and the second subsequent image.