Results 41 to 50 of about 655 (123)

Optimization Based Evaluation of Grating Interferometric Phase Stepping Series and Analysis of Mechanical Setup Instabilities

Journal of Imaging, 2018
The diffraction contrast modalities accessible by X-ray grating interferometers are not imaged directly but have to be inferred from sine-like signal variations occurring in a series of images acquired at varying relative positions of the interferometer ...
Jonas Dittmann, Andreas Balles, Simon Zabler   +2 more
doaj   +1 more source

Deformable image registration of dark‐field chest radiographs for functional lung assessment

Medical Physics, Volume 52, Issue 8, August 2025.
Abstract Background Dark‐field radiography of the human chest has been demonstrated to have promising potential for the analysis of the lung microstructure and the diagnosis of respiratory diseases. However, most previous studies of dark‐field chest radiographs evaluated the lung signal only in the inspiratory breathing state.
Fabian Drexel, Vasiliki Sideri‐Lampretsa, Henriette Bast, Alexander W. Marka, Thomas Koehler, Florian T. Gassert, Daniela Pfeiffer, Daniel Rueckert, Franz Pfeiffer   +8 more
wiley   +1 more source

Isotope-selective high-order interferometry with large organic molecules in free fall

New Journal of Physics, 2018
Interferometry in the time domain has proven valuable for matter-wave based measurements. This concept has recently been generalized to cold molecular clusters using short-pulse standing light waves which realized photo-depletion gratings, arranged in a ...
Jonas Rodewald, Nadine Dörre, Andrea Grimaldi, Philipp Geyer, Lukas Felix, Marcel Mayor, Armin Shayeghi, Markus Arndt   +7 more
doaj   +1 more source

Critical correlations in an ultra-cold Bose gas revealed by means of a temporal Talbot-Lau interferometer

, 2013
The transition from a thermal cloud to a Bose-Einstein condensate (BEC) in an interacting ultra-cold Bose gas is a prototype in a universality class of diverse phase transitions.
Zhou, Xiaoji, Wu, Biao, Xiong, Hongwei, Yue, Xuguang, Chen, Xuzong, Xiong, Wei   +5 more
core   +1 more source

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   +1 more source

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

e-Journal of Nondestructive Testing

Josephine Gutekunst, Rainer Fettig, Elias Hamann, Marcus Zuber, Joachim Schulz   +4 more
doaj   +1 more source

Neutron Phase Contrast Imaging of PbWO$_{4}$ Crystals for G Experiment Test Masses Using a Talbot-Lau Neutron Interferometer

, 2021
The use of transparent test/source masses can benefit future measurements of Newton's gravitational constant $G$. Such transparent test mass materials can enable nondestructive, quantitative internal density gradient measurements using optical ...
Assumin-Gyimah, K. T. A., Dutta, D., Snow, W. M., Langlois, C., Lee, V., Hussey, D. S.   +5 more
core   +1 more source

Two-Grating Talbot Bands Spectral Domain Interferometer [PDF]

, 2015
A configuration for Talbot bands is presented, where two tilted gratings replace the splitter normally used for recombining the signals from the two interferometer arms.
Bradu, Adrian, Marques, M.J., Podoleanu, Adrian G.H.   +2 more
core   +1 more source

Exploration of different x-ray Talbot–Lau setups for dark-field lung imaging examined in a porcine lung

, 2022
X-ray dark-field imaging is a promising technique for lung diagnosis. Due to the alveolar structure of lung tissue, a higher contrast is obtained by the dark-field image compared to the attenuation image.
Rieger, Jens, Horn, Florian, Ludwig, Veronika, Hauke, Christian, Pelzer, Georg, Michel, Thilo, Hellbach, Katharina, Radicke, Marcus, Anton, Gisela, Sutter, Sven-Martin, Seifert, Maria   +10 more
core   +1 more source

Image Processing for Talbot-Lau X-ray Imaging

X-ray imaging is a standard modality for medical imaging and non-destructive testing. Conventional X-ray systems measure the attenuation of radiation. During the last few years, several principles that also allow measuring the refraction of X-rays have ...
Käppler, Sebastian
core   +1 more source