1. An X-ray device, for half-scanning, the device comprising: a radiation source; a detector disposed in a beam path of the radiation source behind an object; a rotating plate comprising a rotary shaft provided adjacent to the radiation source in the beam path, the rotary shaft extending perpendicularly through a center axis of a radiation cone, wherein one side of the rotary shaft comprises X-ray-absorbing material; and a scanner that is operable to scan the object and the detector in only some portions to record two half-images, the two half-images being joined together to produce an X-ray image.