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Phase-contrast X-ray imaging is emerging as an alternative to the conventional Xray radiography for materials with low absorption coefficients. For small features, phase-contrast imaging reduces dose compared to absorption-contrast imaging. There are a variety of phase-contrast imaging techniques, among which the gratingbased and propagation-based methods are discussed in this thesis. The principle of the two phase-contrast imaging methods is explained in this thesis. The image constructiondoi:10.1088/1742-6596/463/1/012041 fatcat:mtxk3ms4uzawno5a2srrtvh4te