An X-ray radiology device comprising a rotating and flat lift. For this X-ray device to operate correctly, it is necessary to obtain and maintain, for all the incidence angles, a perfect alignment of the focal point of the X-ray tube, the element observed and the detector. This geometric imperative is achieved in one embodiment by means of a compensation system. The compensation system includes a cam fitted to a free end of the lift. The compensation system includes a lever in contact with the profile of the cam. The lever is in contact with the detector or the tube connected to the lift. Thus, when the lift rotates, the cam pushes the lever, which in return pushes the tube or the detector in order to align it.