Method and apparatus for ensuring correct positioning for a radiography acquisition

An apparatus for positioning a body region of a patient for a radiography acquisition by a radiography system, comprising:

• an interface configured to provide an examination requirement for the body region;
• an interface configured to pre-position an acquisition unit of the radiography system;
• at least one of a 3D camera system configured to produce a three-dimensional positioning acquisition of the body region, and a data interface to receive the three-dimensional positioning acquisition, the three-dimensional positioning acquisition being a three-dimensional surface image of the body region;
• a production unit configured to produce a preview image from the three-dimensional positioning acquisition, the production unit being configured to produce the preview image from a patient model generated from the three-dimensional positioning acquisition, the preview image depicts a preview of an image generated by the acquisition unit, the patient model being a three-dimensional patient model produced from the three-dimensional surface image and three-dimensional organ data objects of an organ database, the three-dimensional organ data objects positioned based on the three-dimensional surface image;
• and
• an output unit configured to output at least one of the preview image and positioning information based on the preview image.