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Lett."],"published-print":{"date-parts":[[2026,4,1]]},"abstract":"<jats:p>Contrast mechanism of the synchrotron-based monochromatic X-ray imaging\n\t\t\t\t\thas been well-established for the analysis and interpretation of\n\t\t\t\t\ttomographic reconstruction. However, it is not suitable for the\n\t\t\t\t\tlaboratory-based polychromatic X-ray imaging and tomography due to the\n\t\t\t\t\tchange of illuminated X-ray coherence. Here we have proposed a new\n\t\t\t\t\tcontrast mechanism of broad-spectrum-related X-ray imaging by\n\t\t\t\t\tpresenting a general mixed contrast formula and its tomographic\n\t\t\t\t\tcorrection, determined by the coherence degree of light sources. The\n\t\t\t\t\tsimulation and experimental results quantitatively verified the\n\t\t\t\t\tpolychromatic contrast mechanism and tomographic correction of\n\t\t\t\t\tartifacts related to the feature distribution of spectral broadening,\n\t\t\t\t\tcoherent, and incoherent scattering of an object. 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All rights, including\n\t\t\t\t\tfor text and data mining (TDM), Artificial Intelligence (AI) training,\n\t\t\t\t\tand similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}