Results 11 to 20 of about 111,516 (212)

Two-grating Talbot bands spectral-domain interferometer [PDF]

Optics Letters, 2015
A configuration for Talbot bands is presented in which two tilted gratings replace the splitter normally used for recombining the signals from the two interferometer arms. The two optical beams from the interferometer are launched by two fiber leads tightly brought together in the front focal plane of a collimating lens.
Manuel Jorge M. Marques, Adrian Bradu, Adrian Gh. Podoleanu   +2 more
core   +6 more sources

Implementing dark-field contrast imaging in computer tomography with simple setup Talbot-Lau-Interferometer [PDF]

e-Journal of Nondestructive Testing

Josephine Gutekunst, Rainer Fettig, Elias Hamann, Marcus Zuber, Joachim Schulz   +4 more
doaj   +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

Development of x-ray phase tomographic microscope based on Talbot interferometer at BL37XU, SPring-8

AIP Advances, 2020
An x-ray phase tomographic microscope has been developed by optimizing the optical system for 9-keV synchrotron x rays at BL37XU, SPring-8, Japan. The system consists of a full-field x-ray imaging microscope and a Talbot interferometer.
Hidekazu Takano, Yanlin Wu, Masato Hoshino, Karol Vegso, Koh Hashimoto, Koichi Matsuo, Atsushi Momose   +6 more
doaj   +2 more sources

Breast Tumor-Like-Masses Segmentation From Scattering Images Obtained With an Ultrahigh-Sensitivity Talbot-Lau Interferometer Using Convolutional Neural Networks

IEEE Access
Segmentation of breast tumors using imaging techniques remains a critical challenge in medical diagnostics, with limitations in contrast and resolution affecting early detection.
Ionut-Cristian Ciobanu, Nicoleta Safca, Elena Anghel, Dan Popescu   +3 more
doaj   +2 more sources

Moiré artifact reduction in grating interferometry using multiple harmonics and total variation regularization [PDF]

Scientific Reports
X-ray interferometry is an emerging imaging modality with a wide variety of potential clinical applications, including lung imaging. A grating interferometer uses a diffraction grating to produce a periodic interference pattern and measures how a patient
Hunter C. Meyer, Joyoni Dey, Conner B. Dooley, Murtuza S. Taqi, Varun R. Gala, Christopher D. Morrison, Victoria L. Fontenot, Kyungmin Ham, Leslie G. Butler, Alexandra Noël   +9 more
doaj   +2 more sources

Adaptive filtering method for reducing signal saturation induced artifacts in X-ray dark-field tomography [PDF]

Scientific Reports
X-ray dark-field imaging provides information of an object based on its small-angle scattering properties. Dark-field contrast originates from differences in the strength of scattering from micron and sub-micron sized structures in the object.
Henrik Mäkinen, Heikki Suhonen, Simo Huotari   +2 more
doaj   +2 more sources

An electron Talbot interferometer

New Journal of Physics, 2009
The Talbot effect, in which a wave imprinted with transverse periodicity reconstructs itself at regular intervals, is a diffraction phenomenon that occurs in many physical systems. Here we present the first observation of the Talbot effect for electron de Broglie waves behind a nanofabricated transmission grating.
Benjamin J McMorran
exaly   +3 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

Improved Reconstruction Technique for Moiré Imaging Using an X-Ray Phase-Contrast Talbot–Lau Interferometer

Journal of Imaging, 2018
X-ray phase-contrast imaging is a promising method for medical imaging and non-destructive testing. Information about the attenuation, small-angle scattering and phase-shifting properties of an object can be gained simultaneously in three image ...
Maria Seifert, Michael Gallersdörfer, Veronika Ludwig, Max Schuster, Florian Horn, Georg Pelzer, Jens Rieger, Thilo Michel, Gisela Anton   +8 more
doaj   +2 more sources