| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the generation of moire fringes in an X-ray machine using a scattered beam removing grid. SOLUTION: This X-ray machine provided with an X-ray tube 11 for radiating X-ray toward a subject 31; an FPD 21 arranged so that the X-ray transmitted by the subject 31 is incident thereon; and the scattered beam removing grid 15 comprising X-ray high absorptivity part and low absorptivity part arranged in parallel to each other is characterized in that the grid 15 is rotated within its own plane, so that the angle formed by the pixel alignment direction of the FPD 21 and the parallel extending direction of the high and low absorptivity parts of the grid 15 isθr.</p> |
