Recent progress in four-dimensional phase tomography with grating interferometry

Atsushi Momose, Sébastien Harasse, Shunsuke Kibayashi, Margie P. Olbinado, Wataru Yashiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Four-dimensional X-ray phase tomography has been implemented by a combination of X-ray Talbot interferometry and white synchrotron radiation. While the Fourier-transform method has been used for the measurement of a differential phase image at every projection direction, an improved scan mode based on the fringe-scanning method is demonstrated to improve spatial resolution. The disadvantage of the fringe-scanning method, which requires multiple moiré images, is overcome by proposing a scan mode synchronously combining one-way continuous movements of sample rotation and grating displacement. In addition, the operation of an X-ray Talbot-Lau interferometer with white synchrotron radiation is reported. While an X-ray Talbot interferometer requires a horizontal sample rotation axis because of the condition of spatial coherency, such a horizontal rotation axis is not preferable for tomographic scans especially for soft objects. An X-ray Talbot-Lau interferometer overcomes this problem, allowing a vertical sample rotation axis. Although we encountered a vibration problem with the X-ray Talbot-Lau interferometer probably because of incomplete stage stability, our attempts have basically been successful, and we expect that various samples can be scanned by four-dimensional X-ray phase tomography, revealing dynamical properties in weakly absorbing objects that cannot be accessed by conventional X-ray phase tomography mainly performed for static samples.

Original languageEnglish
Title of host publicationDevelopments in X-Ray Tomography VIII
DOIs
Publication statusPublished - 2012 Dec 1
EventDevelopments in X-Ray Tomography VIII - San Diego, CA, United States
Duration: 2012 Aug 132012 Aug 15

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8506
ISSN (Print)0277-786X

Other

OtherDevelopments in X-Ray Tomography VIII
CountryUnited States
CitySan Diego, CA
Period12/8/1312/8/15

Keywords

  • Grating
  • Interferometry
  • Live imaging
  • Phase imaging
  • Phase tomography
  • Synchrotron radiation
  • Talbot effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Momose, A., Harasse, S., Kibayashi, S., Olbinado, M. P., & Yashiro, W. (2012). Recent progress in four-dimensional phase tomography with grating interferometry. In Developments in X-Ray Tomography VIII [850603] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8506). https://doi.org/10.1117/12.929514