Grating based x-ray differential phase contrast imaging without mechanical phase stepping
TLDR
Initial experimental results have demonstrated that the new analyzer grating enables accurate DPCI signal acquisition from a single x-ray exposure like conventional x-rays absorption imaging.Abstract:
Grating-based x-ray differential phase contrast imaging (DPCI) often uses a phase stepping procedure to acquire data that enables the extraction of phase information. This method prolongs the time needed for data acquisition by several times compared with conventional x-ray absorption image acquisitions. A novel analyzer grating design was developed in this work to eliminate the additional data acquisition time needed to perform phase stepping in DPCI. The new analyzer grating was fabricated such that the linear grating structures are shifted from one detector row to the next; the amount of the lateral shift was equal to a fraction of the x-ray diffraction fringe pattern. The x-ray data from several neighboring detector rows were then combined to extract differential phase information. Initial experimental results have demonstrated that the new analyzer grating enables accurate DPCI signal acquisition from a single x-ray exposure like conventional x-ray absorption imaging.read more
Citations
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Dark-field X-ray imaging of unsaturated water transport in porous materials
Fei Yang,Fei Yang,F. Prade,Michele Griffa,Iwan Jerjen,C. Di Bella,C. Di Bella,Julia Herzen,A. Sarapata,Franz Pfeiffer,Pietro Lura,Pietro Lura +11 more
TL;DR: In this article, an approach to X-ray imaging of unsaturated water transport in porous materials based upon the intrinsic Xray scattering produced by the material microstructural heterogeneity at a length scale below the imaging system spatial resolution is introduced.
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Helical X-ray phase-contrast computed tomography without phase stepping
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X-ray microtomography using correlation of near-field speckles for material characterization.
Irene Zanette,Marie-Christine Zdora,Tunhe Zhou,Anna Burvall,Daniel H. Larsson,Pierre Thibault,Hans M. Hertz,Franz Pfeiffer +7 more
TL;DR: X-ray speckle tracking tomography is presented, a simple, robust, and versatile method to obtain simultaneously phase and absorption tomograms of the sample at the micrometer scale with a laboratory X-ray source, based on correlation of near-field speckles.
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Diagnosis of breast cancer based on microcalcifications using grating-based phase contrast CT.
Xinbin Li,Xinbin Li,Hewei Gao,Zhiqiang Chen,Zhiqiang Chen,Li Zhang,Li Zhang,Xiaohua Zhu,Xiaohua Zhu,Shengping Wang,Weijun Peng +10 more
TL;DR: A CT-based method is proposed to potentially distinguish benign and malignant breast diseases based on the distributions of microcalcifications using grating-based phase-contrast imaging on a conventional X-ray tube to improve the early diagnosis and diagnostic accuracy and reduce the clinical misdiagnosis rate of breast cancer.
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Asymmetric masks for laboratory-based X-ray phase-contrast imaging with edge illumination
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References
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Journal ArticleDOI
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Peiping Zhu,Kai Zhang,Zhili Wang,Yijin Liu,Xiaosong Liu,Ziyu Wu,Samuel A. McDonald,Federica Marone,Marco Stampanoni +8 more
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