X-ray imaging apparatus

摘要

In an X-ray imaging apparatus that performs X-ray CT imaging, an X-ray generator (13) that generates an X-ray cone beam (BX1) and an X-ray detector (21) that detects the X-ray cone beam (BX1) radiated to an object (specifically, image object (OB)) are revolved for 180 degrees to be opposed to each other with the object being located therebetween. Further, the X-ray generator (13) is moved such that a revolution reference point (CP) that is set on an optical path (CB) of the X-ray cone beam (BX1) goes round of a predetermined oval shape while the X-ray detector (13) and the X-ray generator (21) are revolved for 180 degrees. Setting is made such that a CT image area (CA) to be imaged by the irradiation of the X-ray cone beam (BX1) has an approximately triangular shape through the above-mentioned operation.

主权项

1. An X-ray CT imaging method for performing X-ray CT imaging comprising:
a supporting step of supporting an X-ray generator that generates an X-ray cone beam, and an X-ray detector that detects the X-ray cone beam radiated to a subject by a support part with the subject located therebetween; a revolving step of revolving the support part relative to the subject by a revolution driving part in the supporting step; a moving step of moving the support part relative to the subject on a two-dimensional plane orthogonal to a revolution shaft of the revolution driving part by movement mechanisms in the revolving step; and a controlling step of controlling the revolution driving part and the movement mechanisms in an interlocking manner such that a CT image area has an approximately triangular shape, the CT image area being imaged by irradiation of the X-ray cone beam by revolving the support part in the revolving step.