| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiographic device capable of acquiring a subtraction image excellent in visual recognizability by not photographing a striped pattern originating in a radiation grid and overlapping fluoroscopic images of a subject without shifting. <P>SOLUTION: A subtraction image P3 is photographed while moving an X-ray grid 5 absorbing scattered ray in relation to FPD4. The subtraction image P3 is produced by overlapping a plurality of fluoroscopic images P1, P2. The most characteristic constitution is to photograph a series of fluoroscopic images P1, P2 which are overlapped when the single subtraction image P3 is produced while the X-ray grid 5 moves from one end side to the other end side in a movable range. In this way, the subtraction image P3 excellent in visual recognizability can be provided. <P>COPYRIGHT: (C)2012,JPO&INPIT |
