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Talbot interferometry with curved quasi-periodic gratings: towards large field of view X-ray phase-contrast imaging.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sun, Yang Yang Cong, Wenxiang Xi, Yan Hua Wang, Guangmin Pang, Shuo |
| Copyright Year | 2015 |
| Abstract | X-ray phase-contrast imaging based on grating interferometry has become a common method due to its superior contrast in biological soft tissue imaging. The high sensitivity relies on the high-aspect ratio structures of the planar gratings, which prohibit the large field of view applications with a diverging X-ray source. Curved gratings allow a high X-ray flux for a wider angular range, but the interference fringes are only visible within ~10° range due to the geometrical mismatch with the commonly used flat array detectors. In this paper, we propose a design using a curved quasi-periodic grating for large field of view imaging with a flat detector array. Our scheme is numerically verified in the X-ray regime and experimentally verified in the visible optical regime. The interference fringe pattern is observed over 25°, with less than 10% of decrease in visibility in our experiments. |
| Starting Page | 10398 |
| Ending Page | 10408 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.creol.ucf.edu/Research/Publications/10397.pdf |
| Alternate Webpage(s) | http://www.creol.ucf.edu/Research/Publications/10076.pdf |
| PubMed reference number | 26480170v1 |
| Alternate Webpage(s) | https://doi.org/10.1364/OE.23.026576 |
| DOI | 10.1364/oe.23.026576 |
| Journal | Optics express |
| Volume Number | 23 |
| Issue Number | 20 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Aspect Ratio Detectors Diagnostic radiologic examination Flux Interferometry Less Than Views:Finding:Point in time:To be specified in another part of the message:Narrative:XR soft tissue |
| Content Type | Text |
| Resource Type | Article |
