Zobrazeno 1 - 10
of 211
pro vyhledávání: '"Morgan, Kaye S"'
Autor:
Alloo, Samantha J, Morgan, Kaye S
X-ray attenuation, phase, and dark-field images provide complementary information. Different experimental techniques can capture these contrast mechanisms, and the corresponding images can be retrieved using various theoretical algorithms. Our previo
Externí odkaz:
http://arxiv.org/abs/2412.15513
Autor:
Ahlers, Jannis N., Pavlov, Konstantin M., Kitchen, Marcus J., Harker, Stephanie A., Pryor, Emily J., Pollock, James A., Croughan, Michelle K., How, Ying Ying, Zdora, Marie-Christine, Costello, Lucy F., O'Connell, Dylan W., Hall, Christopher, Morgan, Kaye S.
X-ray dark-field imaging visualises scattering from sample microstructure, and has found application in medical and security contexts. While most X-ray dark-field imaging techniques rely on masks, gratings, or crystals, recent work on the Fokker--Pla
Externí odkaz:
http://arxiv.org/abs/2412.13451
Autor:
How, Ying Ying, Reyne, Nicole, Croughan, Michelle K., Cmielewski, Patricia, Batey, Daniel, Costello, Lucy F., Smith, Ronan, Ahlers, Jannis N., Cholewa, Marian, Kolodziej, Magdalena, Duerr, Julia, Mall, Marcus A., Kitchen, Marcus J., Asselin-Labat, Marie-Liesse, Paganin, David M., Donnelley, Martin, Morgan, Kaye S.
X-ray dark-field imaging is well-suited to visualizing the health of the lungs because the alveoli create a strong dark-field signal. However, time-resolved and tomographic (i.e., 4D) dark-field imaging is challenging, since most x-ray dark-field tec
Externí odkaz:
http://arxiv.org/abs/2411.14669
Autor:
Alloo, Samantha J., Paganin, David M., Croughan, Michelle K., Ahlers, Jannis N., Pavlov, Konstantin M., Morgan, Kaye S.
A key contribution to X-ray dark-field (XDF) is X-ray diffusion by sample structures smaller than the imaging system's spatial resolution. However, some XDF techniques report that resolvable sample edges also generate XDF. Speckle-based X-ray imaging
Externí odkaz:
http://arxiv.org/abs/2410.18317
Autor:
Croughan, Michelle K, Paganin, David M, Alloo, Samantha J, Ahlers, Jannis N, How, Ying Ying, Harker, Stephanie A, Morgan, Kaye S.
In recent years, a novel x-ray imaging modality has emerged that reveals unresolved sample microstructure via a "dark-field image", which provides complementary information to conventional "bright-field" images, such as attenuation and phase-contrast
Externí odkaz:
http://arxiv.org/abs/2404.17612
Publikováno v:
Optica 11(8), 1182-1191 (2024)
Dark-field X-ray imaging is a novel modality which visualises scattering from unresolved microstructure. Most dark-field imaging techniques rely on crystals or structured illumination, but recent work has shown that dark-field effects are observable
Externí odkaz:
http://arxiv.org/abs/2309.15874
Publikováno v:
Scientific Reports 13, 5424 (2023)
Speckle-based phase-contrast X-ray imaging (SB-PCXI) can reconstruct high-resolution images of weakly-attenuating materials that would otherwise be indistinguishable in conventional attenuation-based imaging. The experimental setup of SB-PCXI require
Externí odkaz:
http://arxiv.org/abs/2302.01288
Publikováno v:
Physical Review A 108, 013517 (2023)
Unresolved spatially-random microstructure, in an illuminated sample, can lead to position-dependent blur when an image of that sample is formed. For a small propagation distance, between the exit surface of the sample and the entrance surface of a p
Externí odkaz:
http://arxiv.org/abs/2301.09046
The size of the smallest detectable sample feature in an x-ray imaging system is usually restricted by the spatial resolution of the system. This limitation can now be overcome using the diffusive dark-field signal, which is generated by unresolved p
Externí odkaz:
http://arxiv.org/abs/2212.02253
Publikováno v:
Optics Express Vol. 31, Issue 7, pp. 11578-11597 (2023)
Directional dark-field imaging is an emerging x-ray modality that is sensitive to unresolved anisotropic scattering from sub-pixel sample microstructures. A single-grid imaging set-up can be used to capture dark-field images by looking at changes in
Externí odkaz:
http://arxiv.org/abs/2211.11757