Experimental validation of image contrast correlation between ultra-small-angle X-ray scattering and grating-based dark-field imaging using a laser-driven compact X-ray source

Martin Bech, Simone Schleede, Guillaume Potdevin, Klaus Achterhold, Franz Pfeiffer, Oliver Bunk, Torben H. Jensen, Rod Loewen, Ron Ruth

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

X-ray phase and dark-field contrast have recently been the source of much attention in the field of X-ray imaging, as they both contribute new imaging signals based on physical principles that differ from conventional X-ray imaging. With a so-called Talbot grating interferometer, both phase-contrast and dark-field images are obtained simultaneously with the conventional attenuation-based X-ray image, providing three complementary image modalities that are intrinsically registered. Whereas the physical contrast mechanisms behind attenuation and phase contrast are well understood, a formalism to describe the dark-field signal is still in progress. In this article, we report on correlative experimental results obtained with a grating interferometer and with small-angle X-ray scattering. Furthermore, we use a proposed model to quantitatively describe the results, which could be of great importance for future clinical and biomedical applications of grating-based X-ray imaging.

Original languageEnglish
Pages (from-to)47-50
Number of pages4
JournalPhotonics and Lasers in Medicine
Volume1
Issue number1
DOIs
StatePublished - 2012

Keywords

  • X-ray
  • dark-field
  • inverse Compton
  • phase contrast

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