Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

X-ray Crystallography

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...

X-ray Imaging

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Pump-probe X-ray holographic imaging of laser-induced cavitation bubbles with femtosecond FEL pulses.

Nature communications·2021

Same author

Iterative micro-tomography of biopsy samples from truncated projections with quantitative gray values.

Physics in medicine and biology·2021

Same author

SARS E protein in phospholipid bilayers: an anomalous X-ray reflectivity study.

Physica. B, Condensed matter·2020

Same author

Spectral µCT with an energy resolving and interpolating pixel detector.

Optics express·2020

Same author

Correlative microscopy approach for biology using X-ray holography, X-ray scanning diffraction and STED microscopy.

Nature communications·2018

Same author

Publisher Correction: Four dimensional material movies: High speed phase-contrast tomography by backprojection along dynamically curved paths.

Scientific reports·2018

Search research articles

Related Experiment Video

Updated: Mar 21, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Using sparsity information for iterative phase retrieval in x-ray propagation imaging.

A Pein, S Loock, G Plonka

|May 4, 2016

Summary

This study enhances iterative phase retrieval for X-ray imaging by applying a novel shearlet constraint to both amplitude and phase of complex signals. This improves accuracy in near-field imaging with limited data.

More Related Videos

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

Related Experiment Videos

Last Updated: Mar 21, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

Area of Science:

Physics
Imaging Science
Applied Mathematics

Background:

Iterative phase retrieval in X-ray imaging requires strong a priori constraints, especially with single-distance measurements.
Existing methods often rely on specimen support information, limiting their applicability.
Shearlet systems offer a powerful tool for representing signal sparsity.

Purpose of the Study:

To extend the shearlet-based sparsity constraint for iterative phase retrieval to complex-valued signals.
To apply the constraint to both amplitude and phase components separately.
To validate the extended approach using experimental near-field X-ray propagation data.

Main Methods:

Development of a novel shearlet constraint applicable to complex-valued signals in phase retrieval.
Separate application of the shearlet constraint to the amplitude and phase of the exit wave.
Implementation and testing of the extended algorithm with experimental X-ray propagation data.

Main Results:

Successful extension of the shearlet constraint to complex-valued signals for phase retrieval.
Demonstration of improved performance in near-field X-ray imaging scenarios.
Validation of the method's applicability to real experimental data.

Conclusions:

The extended shearlet constraint provides a robust and effective method for iterative phase retrieval in near-field X-ray imaging.
This approach enhances imaging capabilities by leveraging sparsity in a complex-valued representation.
The findings pave the way for more accurate and versatile X-ray imaging techniques.