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arXiv · 1003.2155

Dark-field Tomography: Modeling and Reconstruction

W. Cong·F. Pfeiffer·M. Bech·O. Bunk·C. David·G. Wang
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Abstract

Dark-field images are formed by small-angle scattering of x-ray photons. The small-angle scattering signal is particularly sensitive to structural variations and density fluctuation on a length scale of several ten to hundred nanometers, offering a new contrast mechanism to reveal subtle structural variation of object. In this paper, we derive a novel physical model to describe x-ray absorption and small-angle scattering, and use the proposed model to reconstruct the volumetric small-angle scattering images. The numerical experiments and test experiments demonstrate that the reconstructed scattering images reveal unique features with a high contrast resolution. The proposed approach has great potential in biomedical imaging, nondestructive detections, and other applications.

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W. Cong, F. Pfeiffer, M. Bech, O. Bunk, C. David, G. Wang. 2010-03-10. Dark-field Tomography: Modeling and Reconstruction. https://arxiv.org/abs/1003.2155

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