期刊
OPTICS EXPRESS
卷 29, 期 2, 页码 1788-1804出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.414398
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资金
- Intelligence Advanced Research Projects Activity [D2019-1906200003, D2019-1908080004]
- National Institutes of Health [P41GM103445]
- Information Technology Laboratory (BTF FY2018)
- Department of Energy Basic Energy Sciences [DE-AC02-5CH11231]
A reconstruction algorithm for partially coherent x-ray computed tomography (XCT) including Fresnel diffraction is developed and applied to an optical fiber, resulting in a more accurate reconstruction.
A reconstruction algorithm for partially coherent x-ray computed tomography (XCT) including Fresnel diffraction is developed and applied to an optical fiber. The algorithm is applicable to a high-resolution tube-based laboratory-scale x-ray tomography instrument. The computing time is only a few times longer than the projective counterpart. The algorithm is used to reconstruct, with projections and diffraction, a tilt series acquired at the micrometer scale of a graded-index optical fiber using maximum likelihood and a Bayesian method based on the work of Bouman and Sauer. The inclusion of Fresnel diffraction removes some reconstruction artifacts and use of a Bayesian prior probability distribution removes others, resulting in a substantially more accurate reconstruction. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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