| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the generation of moire fringes in the use of a scattered beam removing grid. SOLUTION: This X-ray machine is provided with an X-ray tube 11; an FPD 21 arranged so that the X-ray transmitted by a subject 31 is incident thereon; the scattered beam removing grid 14 arranged between the subject 31 and the FPD 21; and a moving device 16 for moving the grid 15 in the arrangement direction of the X-ray high absorptivity part and low absorptivity part of the grid 15 (the direction right-angled to the paper face of Fig. 1) by the distance of an integral multiple of spatial sampling period of the FPD 21 during the signal accumulating period of the FPD 21.</p> |
