Results 1 to 10 of about 267 (87)

Spectral X-ray dark-field signal characterization from dual-energy projection phase-stepping data with a Talbot-Lau interferometer [PDF]

Scientific Reports, 2023
Material-selective analysis of spectral X-ray imaging data requires prior knowledge of the energy dependence of the observed signal. Contrary to conventional X-ray imaging, where the material-specific attenuation coefficient is usually precisely known ...
Kirsten Taphorn, Lennard Kaster, Thorsten Sellerer, Alexander Hötger, Julia Herzen   +4 more
doaj   +2 more sources

Analysis of a silicon comb structure using an inverse Talbot–Lau neutron grating interferometer [PDF]

Scientific Reports, 2022
We describe an inverse Talbot–Lau neutron grating interferometer that provides an extended autocorrelation length range for quantitative dark-field imaging.
Youngju Kim, Daeseung Kim, Daniel S. Hussey, Jongyul Kim, Mona Mirzaei, Dmitry A. Pushin, Charles W. Clark, Seung Wook Lee   +7 more
doaj   +2 more sources

Demonstration of Neutron Phase Imaging Based on Talbot–Lau Interferometer at Compact Neutron Source RANS

Quantum Beam Science, 2022
Neutron imaging based on a compact Talbot–Lau interferometer was demonstrated using the RIKEN accelerator-driven compact neutron source (RANS). A compact Talbot–Lau interferometer consisting of gadolinium absorption gratings and a silicon phase grating ...
Hidekazu Takano, Yanlin Wu, Atsushi Taketani   +2 more
exaly   +3 more sources

Laboratory-based X-ray phase-imaging scanner using Talbot-Lau interferometer for non-destructive testing [PDF]

Scientific Reports, 2017
An X-ray Talbot-Lau interferometer scanning setup consisting of three transmission gratings, a laboratory-based X-ray source that emits X-rays vertically, and an image detector on the top has been developed for the application of X-ray phase imaging to ...
Shivaji Bachche, Masahiro Nonoguchi, Koichi Kato, Masashi Kageyama, Takafumi Koike, Masaru Kuribayashi, Atsushi Momose   +6 more
doaj   +2 more sources

The choice of an autocorrelation length in dark-field lung imaging [PDF]

Scientific Reports, 2023
Respiratory diseases are one of the most common causes of death, and their early detection is crucial for prompt treatment. X-ray dark-field radiography (XDFR) is a promising tool to image objects with unresolved micro-structures such as lungs.
Simon Spindler, Dominik Etter, Michał Rawlik, Maxim Polikarpov, Lucia Romano, Zhitian Shi, Konstantins Jefimovs, Zhentian Wang, Marco Stampanoni   +8 more
doaj   +2 more sources

Towards virtual histology with X-ray grating interferometry [PDF]

Scientific Reports, 2023
Breast cancer is the most common type of cancer worldwide. Diagnosing breast cancer relies on clinical examination, imaging and biopsy. A core-needle biopsy enables a morphological and biochemical characterization of the cancer and is considered the gold
M. Polikarpov, J. Vila-Comamala, Z. Wang, A. Pereira, S. van Gogh, C. Gasser, K. Jefimovs, L. Romano, Z. Varga, K. Lång, M. Schmeltz, S. Tessarini, M. Rawlik, E. Jermann, S. Lewis, W. Yun, M. Stampanoni   +16 more
doaj   +2 more sources

Fabrication of X-ray absorption gratings by centrifugal deposition of bimodal tungsten particles in high aspect ratio silicon templates [PDF]

Scientific Reports, 2022
Grating-based X-ray imaging employs high aspect ratio absorption gratings to generate contrast induced by attenuating, phase-shifting, and small-angle scattering properties of the imaged object.
Simon Pinzek, Alex Gustschin, Nikolai Gustschin, Manuel Viermetz, Franz Pfeiffer   +4 more
doaj   +2 more sources

Simultaneous signal optimization of refraction and attenuation in x-ray grating interferometry: A case study for breast imaging. [PDF]

Med Phys
Abstract Background X‐ray grating interferometry has emerged as a promising imaging technique for breast computed tomography (BCT), offering complementary contrast from refraction beyond conventional absorption imaging. Although it provides higher resolution, the required dose levels remain above those typically used for breast cancer diagnostic ...
Pereira A, Rawlik M, Spindler S, Kaser S, Etter D, Iori G, Stauber M, Romano L, Stampanoni M.   +8 more
europepmc   +2 more sources

Quantifying grating defects in X-ray Talbot-Lau interferometry through a comparative study of two fabrication techniques [PDF]

Scientific Reports
The performance of an X-ray grating interferometry system depends on the geometry and quality of the gratings. Fabrication of micrometer-pitch high-aspect-ratio gold gratings, which are essential for measuring small refraction angles at higher energies ...
Alexandre Pereira, Simon Spindler, Zhitian Shi, Lucia Romano, Michał Rawlik, Federica Marone, Daniel Josell, Martin Stauber, Marco Stampanoni   +8 more
doaj   +2 more sources

Grating-based x-ray dark-field mammography: Assessing complementary imaging information in simple cystic lesions and typical fibroadenoma. [PDF]

Med Phys
Abstract Background A significant proportion of false positive recalls of mammography‐screened women is due to benign breast cysts and simple fibroadenomas. These lesions appear mammographically as smooth‐shaped dense masses and require the recalling of women for a breast ultrasound to obtain complementary imaging information.
Hellerhoff K, Gottwald W, Taphorn K, Berthe D, Braun M, Wagner K, Resch S, John D, Heck L, Birnbacher L, Herzen J, Grandl S.   +11 more
europepmc   +2 more sources