X-ray imaging device

A method of operating an X-ray imaging device, comprising the steps of:

• providing an X-ray imaging device that conducts an X-ray imaging of a subject during a use;
• operating an X-ray irradiation means to irradiate an X-ray to a subject during said use;
• operating a detection means to detect the X-ray transmitted through the subject during said use;
• using an X-ray detection means to acquire and connect a plurality of X-ray images provided by said X-ray detection means while moving parallel to a defined data line of said X-ray detection means when said plurality of X-ray images are acquired by said X-ray detection means and are connected to thereby generate a long-length image during a long-length imaging;
• storing in a configuration data storage means that stores configuration data of a signal intensity, which is a model data predetermined prior to the long-length imaging, depending on a position defined along a move direction of the long-length imaging;
• calculating with an offset correction value calculation circuit to calculate an offset correction value depending on a position along the move direction of the long-length imaging based on the configuration data of the signal intensity stored by the configuration data storage means and a detected difference of pixel values in an overlapping pixel region relative to two X-ray images adjacent to each other with respect to the subject;
• and
• operating an offset correction circuit to generates an X-ray image following each offset correction, and executing respectively a processing of every data line in which said offset correction value corresponding to a position of such a pixel is subtracted from the pixel value of said pixel relative to an X-ray image, in place in an upper side of a move direction, among two adjacent X-ray images with respect to said subject;
• and
• operating an image connection circuit that conducts said long-length imaging by connecting the X-ray images following the offset correction provided by said offset correction circuit.