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Proceedings Paper

X-ray dark-field computed tomography using a grating interferometer setup
Author(s): Nicholas Bevins; Joseph Zambelli; Zhihua Qi; Guang-Hong Chen
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Paper Abstract

Dark-field x-ray projection imaging and dark-field neutron computed tomography have both recently been demonstrated. Such techniques provide insight into the small-angle scattering properties of the image objects. In this work, the dark-field x-ray imaging method is extended to x-ray computed tomography in order to provide unique and complementary information to the previously reported phase contrast and absorption contrast CT images. Dark-field reconstructions are presented and compared to these two other contrast mechanisms, all three of which can be obtained from a single acquisition using an x-ray grating interferometer setup. Objects which provide little absorption contrast, but have a significant small-angle scattering component, are better visualized in a dark-field CT reconstruction.

Paper Details

Date Published: 18 March 2010
PDF: 6 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76220P (18 March 2010); doi: 10.1117/12.844438
Show Author Affiliations
Nicholas Bevins, Univ. of Wisconsin-Madison (United States)
Joseph Zambelli, Univ. of Wisconsin-Madison (United States)
Zhihua Qi, Univ. of Wisconsin-Madison (United States)
Guang-Hong Chen, Univ. of Wisconsin-Madison (United States)

Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

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