| 摘要 |
<p>An X-ray image pickup device for displaying a tomograph of an object (4) reconstructed from a spirally formed X-ray image formed by applying an X-ray beam to the object (4), comprising a reconstructing means (101) which has a selecting means (105) which selects an X-ray image within a range of -360° to +360° of the rotation angle of an image pickup system at the position of the cross section specified by the operator from the X-ray image formed over a range of 360° around the object at the cross-section position, a filter operation means (102) which subjects the selected X-ray image to a filtering processing, an interpolation operation means (103) which interpolates the projection values of the X-ray image for each pixel at the cross-section position in accordance with the distance between the position of the selected image and the cross-section position in the direction of movement of moving means (5, 6) and from the X-ray image, and an inverse projection operation means (104) which reconstructs the tomograph at the cross-section position from the interpolated image. The tomograph is displayed on a display means (9).</p> |
