An image processing system, x-ray diagnosis apparatus and an image processing method

The present invention relates to an image processing system, X-ray diagnosis apparatus and an image processing method. The image processing system according to the embodiment includes an input unit, an output unit, an acquisition unit, a display unit. The first input unit of the medical image data of a predetermined tissue of the subject obtained by photographing, the setting acceptance landmarks. The output section of the first medical image data contains data of the position of the landmarks and outputs as output data. Receiving the output data acquisition unit, and one or a plurality of the second medical image data obtained by imaging according to the predetermined organization of the subject, and said landmark position to acquire a three-dimensional medical imaging space of the second image data, landmarks in the three-dimensional position information. A display unit based on the three-dimensional position information of the landmark, displaying the first medical image data is superimposed on the image data of the second medical image data obtained by the predetermined organization.