Patent ID: 8837673

Claim:
A method for correctly geometrically assigning x-ray images of a patient, which comprises the steps of: fixedly attaching an optically operating recording device to an x-ray device generating the x-ray images; seating the patient on a top side of a patient couch; fixing a dimensionally stable marker surface directly onto an underside of the patient couch and which can be optically detected by the recording device and defines a reference system to the patient in a fixed relative position; bringing the x-ray device into a first and second recording position such that the recording device is directed toward the marker surface in each instance, in a respective recording position the x-ray device producing a first and second x-ray image of the patient and the recording device producing a first and second recording of the marker surface; determining a respective geometric position of the first and second x-ray image in the reference system from the first and second recording; and correcting geometrically the first and second x-ray image assigned to one another in accordance with the respective geometric position.