Increase in the accuracy of positioning a movable medical X-ray device relative to an examination subject by means of a camera system

摘要

The invention relates to a method for increasing the accuracy of a positioning of a movable medical X-ray device relative to an examination object by means of a camera system, comprising the following steps - recording a first data record, which images at least a first section of a surface structure of the examination object, at a first point in time by means of the camera system , the medical x-ray device having a detector, the camera system having a defined position relative to the detector, acquisition of original positioning information of the x-ray device at the first point in time, the x-ray device being in an original position at the first point in time, specification of a target position of the x-ray device relative to the Original position, the original position being described by means of the original positioning information and the first data set, positioning of the x-ray device after the first point in time from de r original position in a first approach position by means of the original positioning information, recording of a further data record, which depicts at least one further section of the surface structure of the examination object, at a further point in time by means of the camera system, the x-ray device being in the first approach position at the further point in time and the at least one first section and the at least one further section at least partially map a common area of the surface structure of the examination object, - determination of a deviation between the target position and the first approach position by a comparison between the first data set and the further data set, - positioning of the X-ray device from the first approach position in a second approach position by means of the determined deviation.