| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiographic X-ray equipment in which an X-ray image does not cause halation, even if an X-ray movable stop is quickly and widely opened. SOLUTION: The radiographic X-ray equipment which is equipped with an X-ray perspective image filming means for filming an X-ray perspective image of an examined body by irradiating X-rays on it, an X-ray irradiation field adjustment means adjusting an irradiation field of the X-rays, an image display means displaying images based on the X-ray perspective image taken by the X-ray perspective image filming means, and an automatic brightness adjustment means controlling irradiated X-rays based on X-ray perspective image signals filmed by the X-ray perspective image filming means, and obtains an X-ray perspective image of the examined body of a given brightness is further provided with an automatic brightness correction means adding an opening degree of the X-ray irradiation field adjustment means as a correction information of the automatic brightness adjustment means to restrain a volume of X-ray irradiation before a light volume (a video signal) is increased. COPYRIGHT: (C)2005,JPO&NCIPI
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