Phase Effects on Mesoscale Object X-ray Attenuation Radiographs

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Description

Digital x-ray radiography and computed tomography methods are commonly used to characterize mesoscale objects (mm size objects with {micro}m size features). However the ability of these methods to provide high spatial resolution images is dependent, in part, on object recovery algorithms that account for phase effects [1]. The objective of this work is the development and validation of algorithms to model phase-contrast effects observed in x-ray radiographic systems, and to use these algorithms for quantitative object recovery. This work has three distinct tasks. First, we are modifying HADES [2,3] to model x-ray phase contrast and are investigating whether multislice techniques ... continued below

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Martz, Jr., H E; Aufderheide, M B; Barty, A; Hau-Riege, S; Lehman, S K; Kozioziemski, B J et al. November 8, 2005.

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Description

Digital x-ray radiography and computed tomography methods are commonly used to characterize mesoscale objects (mm size objects with {micro}m size features). However the ability of these methods to provide high spatial resolution images is dependent, in part, on object recovery algorithms that account for phase effects [1]. The objective of this work is the development and validation of algorithms to model phase-contrast effects observed in x-ray radiographic systems, and to use these algorithms for quantitative object recovery. This work has three distinct tasks. First, we are modifying HADES [2,3] to model x-ray phase contrast and are investigating whether multislice techniques within the object are needed to fully capture the physics seen in x-ray data. Second, we are developing object recovery approaches. Third, we are validating these simulations against x-ray systems using well-known objects. At the end of this R&D, we will have a set of validated x-ray forward modeling codes including the effects of phase and an understanding of the current object recovery methods limitations.

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PDF-file: 4 pages; size: 0 Kbytes

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  • Report No.: UCRL-TR-217053
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/887289 | External Link
  • Office of Scientific & Technical Information Report Number: 887289
  • Archival Resource Key: ark:/67531/metadc886319

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  • November 8, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 6, 2016, 3:40 p.m.

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Martz, Jr., H E; Aufderheide, M B; Barty, A; Hau-Riege, S; Lehman, S K; Kozioziemski, B J et al. Phase Effects on Mesoscale Object X-ray Attenuation Radiographs, report, November 8, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc886319/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.