| Title |
|
Tomographic reconstruction using tilted Laue analyser-based X-ray phase-contrast imaging |
|
|
| Publication Date |
|
| Author(s) |
|
| Type of document |
|
| Language |
|
| Entity Type |
|
| Publisher |
|
Wiley-Blackwell Publishing Ltd |
|
|
| Place of publication |
|
| DOI |
|
10.1107/S1600577520013995 |
|
|
| UNE publication id |
|
| Abstract |
Analyser-based phase-contrast imaging (ABPCI) is a highly sensitive phase-contrast imaging method that produces high-contrast images of weakly absorbing materials. However, it is only sensitive to phase gradient components lying in the diffraction plane of the analyser crystal [i.e. in one dimension (1-D)]. In order to accurately account for and measure phase effects produced by the wavefield-sample interaction, ABPCI and other 1-D phase-sensitive methods must achieve 2-D phase gradient sensitivity. An inclined geometry method was applied to a Laue geometry setup for X-ray ABPCI through rotation of the detector and object about the optical axis. This allowed this traditionally 1-D phase-sensitive phase-contrast method to possess 2-D phase gradient sensitivity. Tomographic datasets were acquired over 360° of a multi-material phantom with the detector and sample tilted by 8°. The real and imaginary parts of the refractive index were reconstructed for the phantom. |
|
|
| Link |
|
| Citation |
|
Journal of synchrotron radiation, 28(1), p. 283-291 |
|
|
| ISSN |
|
| Start page |
|
| End page |
|