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Related Concept Videos

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Related Experiment Video

Updated: Jun 1, 2026

High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
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Published on: September 30, 2022

Quantitative phase imaging with polychromatic x-ray sources.

Mac B Luu1, Benedicta D Arhatari, Chanh Q Tran

  • 1Department of Physics, La Trobe University, Victoria, Australia. bmluu@students.latrobe.edu.au

Optics Express
|June 7, 2011
PubMed
Summary
This summary is machine-generated.

We developed a new phase retrieval algorithm using contrast transfer functions to reconstruct sample thickness from polychromatic X-ray data. This method accurately recovers 2D and 3D sample structures, even with complex X-ray sources.

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Area of Science:

  • X-ray imaging
  • Phase retrieval algorithms
  • Materials science

Background:

  • X-ray imaging is crucial for materials analysis.
  • Phase retrieval is essential for quantitative X-ray imaging.
  • Polychromatic X-ray sources present unique challenges.

Purpose of the Study:

  • To develop and validate a contrast transfer function (CTF) based phase retrieval algorithm.
  • To reconstruct the projected thickness of homogeneous samples.
  • To demonstrate the algorithm's efficacy with polychromatic X-ray sources.

Main Methods:

  • Theoretical development of a CTF-based phase retrieval algorithm.
  • Experimental validation using synchrotron and laboratory X-ray sources.
  • Reconstruction of sample thickness in 2D and 3D.

Main Results:

  • Successful quantitative recovery of projected sample thickness.
  • Demonstrated robustness with a synchrotron source with harmonic contamination.
  • Achieved accurate 3D reconstructions using a laboratory source.

Conclusions:

  • The CTF-based phase retrieval algorithm is effective for polychromatic X-ray imaging.
  • The method provides accurate thickness reconstruction for homogeneous samples.
  • This technique broadens the applicability of X-ray phase contrast imaging.