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The finite difference phase contrast image pickup which uses the circular lattice
The finite difference phase contrast image pickup which uses the circular lattice
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机译:使用圆晶格的有限差分相衬图像拾取
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摘要
An X-ray differential phase-contrast imaging system has three circular gratings. The circular gratings are aligned with the optical axis of the radiation beam and a phase stepping is performed along the optical axis with the focal spot, the phase grating and/or the absorber grating. The signal measured is the phase-gradient in radial direction away from the optical axis.
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