X-ray ct scanner, x-ray image processor, and x-ray image display

An X-ray CT scanner performing X-ray CT imaging of an imaging region in a subject to generate an X-ray imaging information of said imaging region by detecting an X-ray cone beam irradiated from an X-ray generator with an X-ray detector, the X-ray CT scanner comprising:

• a supporter locating the X-ray generator and the X-ray detector such that the X-ray generator and the X-ray detector face each other while having the subject therebetween;
• an offset mechanism relatively moving an irradiation direction of the X-ray cone beam irradiated from the X-ray generator, with respect to a center of the imaging region such that the irradiation direction is offset from the center of the imaging region in a reference plane vertical to an imaging central axis of the imaging region;
• an axial direction changing mechanism changing as the imaging region from a first imaging region to which the X-ray CT imaging is executed first by the X-ray generator and the X-ray detector to a second imaging region to which the X-ray CT imaging is executed after the first imaging region in an axial direction of the imaging central axis, said imaging region comprising the first imaging region and the second imaging region;
• an imaging controller controlling the X-ray CT imaging to revolve the supporter with respect to the subject to generate the X-ray imaging information;
• and
• an image information generator generating stitch image information acquired as a result of joining first X-ray imaging information on the first imaging region and second X-ray imaging information on the second imaging region in the axial direction, the first X-ray imaging information and the second X-ray imaging information partially overlapping each other in the axial direction,
• the X-ray CT scanner being configured to be capable of executing:
• control on offset CT imaging of controlling the offset mechanism such that the X-ray cone beam is always directed toward a part of the imaging region throughout the imaging, and
• control on the axial direction changing mechanism to generate the first X-ray imaging information and the second X-ray imaging information partially overlapping each other in the axial direction, and
• at least one of the first X-ray imaging information and the second X-ray imaging information being offset CT imaging information acquired by the offset CT imaging.