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Proceedings Paper

Quasi-real-time x-ray microtomography system at the Advanced Photon Source
Author(s): Yuxin Wang; Francesco De Carlo; Ian Foster; Joseph Insley; Carl Kesselman; Peter Lane; Gregor von Laszewski; Derrick C. Mancini; Ian McNulty; Mei-Hui Su; Brian Tieman
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Paper Abstract

The combination of high-brilliance x-ray sources, fast detector systems, wide-bandwidth networks, and parallel computers can substantially reduce the time required to acquire, reconstruct, and visualize high-resolution three- dimensional tomographic data sets. A quasi-realtime computed x-ray microtomography system has been implemented at the 2-BM beamline at the Advanced Photon Source at Argonne National Laboratory. With this system, a complete tomographic data set can be collected in about 15 minutes. Immediately after each projection is obtained, it is rapidly transferred to the Mathematics and Computing Sciences Division where preprocessing and reconstruction calculations are performed concurrently with the data acquisition by a SGI parallel computer. The reconstruction results, once completed, are transferred to a visualization computer that performs the volume rendering calculations. Rendered images of the reconstructed data are available for viewing back at the beamline experiment station minutes after the data acquisition was complete. The fully pipelined data acquisition and reconstruction system also gives us the option to acquire the tomographic data set in several cycles, initially with coarse then with fine angular steps. At present the projections are acquired with a straight-ray projection imaging scheme using 5 - 20 keV hard x rays in either phase or amplitude contrast mode at a 1 - 10 micrometer resolution. In the future, we expect to increase the resolution of the projections to below 100 nm by using a focused x-ray beam at the 2-ID-B beamline and to reduce the combined acquisition and computation time to the 1 min scale with improvements in the detectors, network links, software pipeline, and computation algorithms.

Paper Details

Date Published: 22 September 1999
PDF: 10 pages
Proc. SPIE 3772, Developments in X-Ray Tomography II, (22 September 1999);
Show Author Affiliations
Yuxin Wang, Argonne National Lab. (United States)
Francesco De Carlo, Argonne National Lab. (United States)
Ian Foster, Argonne National Lab. (United States)
Joseph Insley, Argonne National Lab. (United States)
Carl Kesselman, Univ. of Southern California (United States)
Peter Lane, Argonne National Lab. (United States)
Gregor von Laszewski, Argonne National Lab. (United States)
Derrick C. Mancini, Argonne National Lab. (United States)
Ian McNulty, Argonne National Lab. (United States)
Mei-Hui Su, Univ. of Southern California (United States)
Brian Tieman, Argonne National Lab. (United States)

Published in SPIE Proceedings Vol. 3772:
Developments in X-Ray Tomography II
Ulrich Bonse, Editor(s)

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