Results 31 to 40 of about 111,516 (212)

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

open access: yesMed 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   +8 more
europepmc   +2 more sources

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

open access: yesMed 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   +11 more
europepmc   +2 more sources

Ultrafast sub-nanometer matter-wave temporal Talbot effect

open access: yesNew Journal of Physics, 2021
The coherent manipulation of the electron wavefunction at the atomic spatial and temporal scales is the fundamental breakthrough underlying far-reaching ultrafast phenomena as high-order harmonic radiation and attosecond pulse generation.
Ana García-Cabrera   +2 more
doaj   +1 more source

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

open access: yesHigh 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   +12 more
doaj   +1 more source

From classical xenon fringes to hydrogen interferometry

open access: yesNew Journal of Physics, 2020
A setup with three equally spaced transmission gratings can be described as a moiré deflectometer in the classical regime and as a Talbot–Lau interferometer in the quantum regime.
Simon R Müller   +2 more
doaj   +1 more source

EFFECT OF OPTICAL FIBER HYDROGEN LOADING ON THE INSCRIPTION EFFICIENCY OF CHIRPED BRAGG GRATINGS BY MEANS OF KrF EXCIMER LASER RADIATION [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.We present comparative results of the chirped Bragg gratings inscription efficiency in optical fiber of domestic production with and without low-temperature hydrogen loading. Method.
Sergey V. Varzhel   +3 more
doaj   +1 more source

Matter-wave interference of a native polypeptide

open access: yesNature 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   +7 more
doaj   +1 more source

Vibration compensation of wavelength scanning interferometer for in-process surface inspection [PDF]

open access: yes, 2010
A vibration stabilized Wavelength Scanning Interferometer (WSI) is developed for online or in-process measurement purposes. This paper describes the vibration compensation part of the WSI system.
Gao, F.   +2 more
core   +3 more sources

High-speed quantitative X-ray multi-contrast imaging with deep learning based modulated pattern analysis. [PDF]

open access: yesJ Synchrotron Radiat
This work presents a neural‐network framework that accelerates X‐ray multi‐contrast imaging—simultaneously delivering absorption, phase, and dark‐field, while maintaining high spatial resolution, and outperforms correlation‐based methods in speed, achieving a favorable balance between resolution and throughput.
Qiao Z   +8 more
europepmc   +2 more sources

Decoherence in a Talbot–Lau interferometer: the influence of molecular scattering [PDF]

open access: yesApplied Physics B, 2003
8 pages, 5 ...
Hackermüller, Lucia   +4 more
openaire   +2 more sources

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