Results 11 to 20 of about 1,236 (164)

A Wigner Function Approach to Coherence in a Talbot-Lau Interferometer [PDF]

Atoms, 2016
Using a thermal gas, we model the signal of a trapped interferometer. This interferometer uses two short laser pulses, separated by time T, which act as a phase grating for the matter waves.
Eric Imhof, James Stickney, Matthew Squires   +2 more
doaj   +3 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, Tetsuo Samoto, Atsushi Taketani, Takaoki Takanashi, Chihiro Iwamoto, Yoshie Otake, Atsushi Momose   +7 more
doaj   +3 more sources

Comparison of Thermal Neutron and Hard X-ray Dark-Field Tomography [PDF]

Journal of Imaging, 2020
High visibility (0.56) neutron-based multi-modal imaging with a Talbot–Lau interferometer at a wavelength of 1.6 Å is reported. A tomography scan of a strongly absorbing quartz geode sample was performed with both the neutron and an X-ray grating ...
Alex Gustschin, Tobias Neuwirth, Alexander Backs, Manuel Viermetz, Nikolai Gustschin, Michael Schulz, Franz Pfeiffer   +6 more
doaj   +2 more sources

Retrieval of 3D information in X-ray dark-field imaging with a large field of view [PDF]

Scientific Reports, 2021
X-ray dark-field imaging is a widely researched imaging technique, with many studies on samples of very different dimensions and at very different resolutions.
Jana Andrejewski, Fabio De Marco, Konstantin Willer, Wolfgang Noichl, Theresa Urban, Manuela Frank, Alex Gustschin, Pascal Meyer, Thomas Koehler, Franz Pfeiffer, Julia Herzen   +10 more
doaj   +2 more sources

Matter-wave interference of a native polypeptide [PDF]

Nature Communications, 2020
Matter-wave interferometry of complex molecules is challenging due to difficulties in preparing and detecting molecular beams. Here the authors demonstrate quantum behavior of a polypeptide using matter-wave interference in an all-optical time-domain ...
A. Shayeghi, P. Rieser, G. Richter, U. Sezer, J. H. Rodewald, P. Geyer, T. J. Martinez, M. Arndt   +7 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

Correction for mechanical inaccuracies in a scanning Talbot-Lau interferometer

IEEE Transactions on Medical Imaging, 2022
<p>Grating-based X-ray phase-contrast and in particular dark-field radiography are promising new imaging modalities for medical applications. Currently, the potential advantage of dark-field imaging in early-stage diagnosis of pulmonary diseases in humans is being investigated.
Wolfgang Noichl, Fabio De Marco, Konstantin Willer, Theresa Urban, Manuela Frank, Rafael Schick, Bernhard Gleich, Lorenz Hehn, Alex Gustschin, Pascal Meyer, Thomas Koehler, Ingo Maack, Klaus-Jürgen Engel, Bernd Lundt, Bernhard Renger, Alexander Fingerle, Daniela Pfeiffer, Ernst Rummeny, Julia Herzen, Franz Pfeiffer   +19 more
openaire   +4 more sources

Phase imaging of irradiated foils at the OMEGA EP facility using phase-stepping X-ray Talbot–Lau deflectometry

High Power Laser Science and Engineering, 2023
Diagnosing the evolution of laser-generated high energy density (HED) systems is fundamental to develop a correct understanding of the behavior of matter under extreme conditions.
G. Pérez-Callejo, V. Bouffetier, L. Ceurvorst, T. Goudal, S. R. Klein, D. Svyatskiy, M. Holec, P. Perez-Martin, K. Falk, A. Casner, T. E. Weber, G. Kagan, M. P. Valdivia   +12 more
doaj   +1 more source

INSIDEnet: Interpretable NonexpanSIve Data‐Efficient network for denoising in grating interferometry breast CT

Medical Physics, Volume 49, Issue 6, Page 3729-3748, June 2022., 2022
Abstract Purpose Breast cancer is the most common malignancy in women. Unfortunately, current breast imaging techniques all suffer from certain limitations: they are either not fully three dimensional, have an insufficient resolution or low soft‐tissue contrast.
Stefano van Gogh, Zhentian Wang, Michał Rawlik, Christian Etmann, Subhadip Mukherjee, Carola‐Bibiane Schönlieb, Florian Angst, Andreas Boss, Marco Stampanoni   +8 more
wiley   +1 more source

[Retracted] Study on the Cytotoxic Microstructure of Titanium Dioxide Nanoparticles by X‐Ray Phase‐Contrast CT Imaging

Contrast Media &Molecular Imaging, Volume 2022, Issue 1, 2022., 2022
To address the problem of microstructural analysis of titania nanoparticles with high cytotoxicity, the authors propose X‐ray phase‐comparative CT imaging studies. In this method, the HE‐stained section samples were compared with the X‐ray phase‐contrast CT imaging microscopic images, and 3D texture analysis was used to observe the changes in the ...
Jingtong Fei, Shanshan Nie, Bo Zhang, Xinli Teng, Ying Chen, Yikun Qu, Zhuoxin Cheng, Linqi Guo, Sorayouth Chumnanvej   +8 more
wiley   +1 more source