| 摘要 |
In an X-ray imaging system, first and second grids are disposed between an X-ray source and an X-ray image detector, and produce fringe images. From the fringe images, phase change information of X-rays is obtained. The phase change information provides contrast for an X-ray image. The first and second grids have similar configuration. Each grid is constituted of a grid layer and a support member. The grid layer includes X-ray absorbing portions and X-ray transparent portions arranged alternately in one direction. Each X-ray transparent portion contains hollow space having air trapped therein, for the purpose of reducing an X-ray absorption loss. |
