Microstructure and energy dispersive diffraction reconstruction of 3D patterns of crystallographic texture in a shark centrum
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2022
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Details
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Journal Title:Journal of Medical Imaging
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Personal Author:
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NOAA Program & Office:
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Description:Purpose: Tomography using diffracted x-rays produces reconstructions mapping quantities such as crystal lattice parameter(s), crystallite size, and crystallographic texture, information quitedifferent from that obtained with absorption or phase contrast. Diffraction tomography is usedto map an entire blue shark centrum with its double cone structure (corpora calcerea) and inter-medialia (four wedges). Approach: Energy dispersive diffraction (EDD) and polychromatic synchrotron x-radiation at 6-BM-B, the Advanced Photon Source, were used. Different, properly oriented Bragg planesdiffract different x-ray energies; these intensities are measured by one of ten energy-sensitivedetectors. A pencil beam defines the irradiated volume, and a collimator before each energy- sensitive detector selects which portion of the irradiated column is sampled at any one time. Translating the specimen along X;Y, and Zaxes produces a 3D map.
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Keywords:
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Source:Journal of Medical Imaging, 9(03)
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DOI:
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ISSN:2329-4302
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Rights Information:Other
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Compliance:Library
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Main Document Checksum:urn:sha256:28bb6899d48938a277538714ad92f4ea09346701e20571f44cce7ed3846ee4d6
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