| 摘要 |
<p>An x-ray differential phase contrast imaging apparatus includes an x-ray source, a source grating, a diffraction grating diffracting x-rays from the x-ray source and source grating and a detector detecting x-rays from the diffraction grating, wherein the source grating includes first x-ray transmissive apertures transmitting x-rays to thereby form a first interference pattern by being diffracted at the diffraction grating, and second x-ray transmissive apertures transmitting x-rays to thereby form a second interference pattern by being diffracted at the diffraction grating, wherein the first and second x-ray transmissive apertures are pinhole apertures which are disposed so that at least part of the first and second interference pattern overlap and the positions of x-ray regions in the first interference pattern differ from the positions of x-ray regions in the second interference pattern, and wherein a combined pattern is formed by the first interference pattern and the second interference pattern.</p> |
