| 摘要 |
PROBLEM TO BE SOLVED: To perform a high-speed CT radiographing of high quality and an oblique-incidence fluoroscopic radiographing of a large tilt angle by use of a single device. SOLUTION: Two arm members 10 and 11 having an X-ray tube 1 and a panel type detector 2 at the tips are arranged in such a manner as to be capable of advancing and retreating in a direction parallel to the axis Z of a subject M. At the time of high-speed CT radiographing, the X-ray tube 1 and the detector 2 are laid in a state where they are mutual opposed in the vicinity of a ring-like rotary base 4 by adjusting the advance and retreat of the two arm members 10 and 11, and the rigidity of the arm members 10 and 11 is ensured to prevent the X-ray tube 1 and detector 2 from being unstable by the high-speed rotation, whereby the high-speed CT radiographing of high quality is realized. At the time of oblique-incidence fluoroscopic radiographing, the X-ray tube 1 and the detector 2 are laid in a stat where they are opposed with a large space, and the inclination is increased, thereby, the oblique-incidence fluoroscopic radiographing of a large inclination is realized.
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