A gantry of a computed tomography (CT) apparatus includes a rotating frame configured to rotate around a rotation axis and a rotation driver configured to rotate the rotating frame. The gantry also includes a stator configured to support the rotating frame while the rotating frame rotates and electronic components arranged along a circumferential direction of the rotating frame. The rotating frame includes a plurality of annular frames positioned concentrically around the rotation axis and a plurality of rib frames arranged on circumferential surfaces of the plurality of annular frames and parallel to the rotation axis in such a manner as to connect the plurality of annular frames. At least one of the plurality of annular frames and the plurality of rib frames has a recessed portion along a longitudinal direction thereof.
