1. An X-ray hybrid diagnosis system comprising: an X-ray radiography unit comprising a first X-ray tube and a first X-ray detector for detecting X-rays irradiated from said first X-ray tube, said X-ray radiography unit configured to irradiate a subject with X-rays from said first X-ray tube to obtain an X-ray radiographic image; an X-ray CT unit comprising a gantry including a second X-ray tube and a second X-ray detector for detecting X-rays irradiated from said second X-ray tube, said X-ray CT unit configured to irradiate the subject with X-rays from said second X-ray tube and acquire projection data from a beam of X-rays that has passed through the subject to reconstruct an image using the acquired projection data and to obtain a tomographic image; a power supply configured to power said first X-ray tube and said second X-ray tube; a control console configured to control one of said X-ray radiography unit and said X-ray CT unit, said control console including a means for predicting an increase in temperature of one of said first X-ray tube and said second X-ray tube to control irradiation to maintain the temperature at or below a predetermined threshold; and a cradle, said first X-ray detector movably positioned within said cradle.