1. A method for registering image data of a body, wherein the image data of the body are captured in a detection range of a medical image capture device and the body is subsequently shifted relative to the detection range or vice versa, comprising: capturing, via the medical image capture device, image data of the body prior to a first marker array being placed in a fixed positional relationship relative to the body; subsequent to capturing the image data, placing the first marker array in a fixed positional relationship relative to the body; and registering, with computer assistance, the image data and the body based on a detected position of the first marker array and a second marker array, arranged in a defined positional relationship relative to the detection range.