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- W2074737082 abstract "The easiest way to obtain X‐ray images of the internal structure of condensed objects is to register projections on an area detector like a photographic plate or a CCD and analyze the intensity of the transmitted beam. In such an arrangement the main cause of structures seen on the image is usually absorption contrast which scales with Z(Z/E)m where Z is atomic number, E is X‐ray energy, and m ≈ 2.5 to 3.5. Hence for light elements (which often are of main importance in the medical field) absorption contrast is quite small and sometimes unspecific compared to contrast caused by X‐ray phase shift which scales with Z/E. In recent years various methods capable of registering X‐ray phase shift have been developed, which include double crystal topography, X‐ray interferometry, in‐line phase‐contrast imaging, the use of Talbot‐mode grid devices, and others. A survey of existing approaches and examples of recent results will be given. —An important aspect in the application of X‐ray imaging in the medical field is the amount of unavoidable irradiation dose to be applied to the patient under investigation. There is some hope that in the future, with a suitable phase‐contrast method, the dose can be lowered." @default.
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- W2074737082 date "2010-01-01" @default.
- W2074737082 modified "2023-09-23" @default.
- W2074737082 title "X-Ray Imaging with Phase Contrast" @default.
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- W2074737082 doi "https://doi.org/10.1063/1.3426108" @default.
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