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Mikroskopie und Tomographie Poster: Mi., 14:00–16:30 M-P101
Quantitative synchrotron radiation based x-ray microtomography
Tilman Donath 1 , Felix Beckmann 1 , Andreas Schreyer 2
1 GKSS Research Center, Institute for Materials Research, GKSS at DESY, Notkestr.
85, 22607 Hamburg – 2 GKSS Research Center, Institute for Materials Research, Max-
Planck-Straße, 21502 Geesthacht
X-ray microtomography (µCT) is a method for 3D imaging of objects at spatial resolution
of around one micrometer. In µCT, the volume structure, more precisely, the
distribution of the x-ray attenuation coefficient is reconstructed from 2D projection
images. The unique properties of synchrotron radiation (SR), especially the small
bandwidth available in monochromated beams, enable the precise determination of
the attenuation coefficient in synchrotron radiation based microtomograhy (SRµCT).
To make full use of the capabilities of SR radiation, the recorded data must be properly
processed. New developments of the x-ray detector design and the reconstruction
chain have been made. Especially, a new method for the determination of the center
of rotation in the recorded data is presented [1]. Examples of quantitative measurements
performed at the Hamburger Synchrotronstrahlungslabor (HASYLAB) at the
Deutsches Elektronen-Synchrotron (DESY) are given. This contribution summarizes
part of the first author’s PhD thesis.
[1] T. Donath, F. Beckmann, and A. Schreyer. Automated determination of the center
of rotation in tomography data. J. Opt. Soc. Am. A, 23(5):1048–1057, 2006.