The present invention relates to a smart apparatus for acquiring patient images, the smart apparatus being structured so as to integrate capabilities for acquiring two-dimensional images and three-dimensional images into a single piece of equipment, thereby allowing the expense and installation space therefor to be minimized. The smart apparatus for acquiring patient images according to the present invention comprises: a gantry having a cylindrical opening； CT X-ray tube and curved X-ray detector installed in the gantry 180 degrees apart and installed so as to be rotatable along the circumferential direction of the gantry to acquire three-dimensional images of a person being treated accommodated in the interior of the opening of the gantry by rotating around the person； two-dimensional X-ray tube and X-ray detector installed in the gantry 180 degrees apart and installed, along with the CT X-ray tube and curved X-ray detector, so as to be rotatable along the circumferential direction of the gantry to acquire two-dimensional x-ray images of a person being treated accommodated in the interior of the opening of the gantry； a rotation means for simultaneously rotating the CT X-ray tube and X-ray detector and two-dimensional X-ray tube and X-ray detector along the circumferential direction of the gantry； a couch disposed on one side of the gantry so as to be horizontally movable in and out of the opening of the gantry and on which the person to be treated is placed.
