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Proceedings Paper

Four-dimensional x-ray phase tomography with Talbot interferometer and white synchrotron light
Author(s): Atsushi Momose; Wataru Yashiro; Sebastien Harasse; Hiroaki Kuwabara; Katsuyuki Kawabata
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Paper Abstract

Taking advantage of the fact that an X-ray Talbot interferometer functions with X-rays of a broad energy bandwidth, high-speed X-ray phase tomography has been demonstrated by using white synchrotron light. Time resolution in addition to three-dimensional spatial resolution has been attained, and we report this achievement as the first four-dimensional (4D) X-ray phase tomography. Moire image movies of samples rotating at a speed of 1 or 2 rps generated by a Talbot interferometer were recorded at a frame rate of up to 1 kf/s, and differential phase image movies of the same frame rate were created by the Fourier-transform method. Consequently, a sub-second time resolution was achieved in the 4D phase tomography, while the spatial resolution was below 0.1 mm and 0.05 mm in axial and in-plane directions, respectively. An X-ray Talbot interferometer generates visibility images in addition to differential phase images, showing the distribution of microstructures, which cause ultra-small angle scattering but cannot be resolved individually with system spatial resolution. Tomographic image reconstruction from the visibility images was also demonstrated.

Paper Details

Date Published: 1 September 2010
PDF: 9 pages
Proc. SPIE 7804, Developments in X-Ray Tomography VII, 780405 (1 September 2010); doi: 10.1117/12.859235
Show Author Affiliations
Atsushi Momose, The Univ. of Tokyo (Japan)
Wataru Yashiro, The Univ. of Tokyo (Japan)
Sebastien Harasse, The Univ. of Tokyo (Japan)
Hiroaki Kuwabara, The Univ. of Tokyo (Japan)
Katsuyuki Kawabata, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 7804:
Developments in X-Ray Tomography VII
Stuart R. Stock, Editor(s)

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