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- W2039969155 abstract "The basic principles of x-ray image formation in radiography have remained essentially unchanged since R¨ontgenfirst discovered x-rays over a hundred years ago. The conventional approach relies on x-ray absorption asthe sole source of contrast and draws exclusively on ray or geometrical optics to describe and interpret imageformation. This approach ignores another, potentially more useful source of contrast, namely phase and scatteringinformation. Phase-contrast imaging techniques, which can be understood using wave optics rather than rayoptics, offer ways to augment or complement standard absorption contrast by incorporating phase information.The recent development of grating based phase- and darkfield-contrast imaging with x-rays1 pawed the way for many potential applications to medical imaging and structure determination in material science.Here we present our recent contributions to the field of interferometric phase-contrast and dark-field x-ray imaging. We introduce a new material dependent scattering parameter, the Linear Diffusion Coefficient, and a quantitative mathematical formalism to extend the dark-field x-ray images into three dimensions by tomographic reconstruction. Further, the results of two experiments that illustrate the potential of dark-field imaging for computed tomography are shown." @default.
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- W2039969155 date "2010-03-04" @default.
- W2039969155 modified "2023-09-24" @default.
- W2039969155 title "Quantitative multimodal x-ray tomography: absorption, phase, and darkfield contrast" @default.
- W2039969155 doi "https://doi.org/10.1117/12.845921" @default.
- W2039969155 hasPublicationYear "2010" @default.
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