Use of multiple CT scans to accommodate large objects and stretch dynamic range of detectability Metadata

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  • Main Title Use of multiple CT scans to accommodate large objects and stretch dynamic range of detectability


  • Author: Sivers, E.A.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)


  • Name: Argonne National Laboratory
    Place of Publication: Illinois
    Additional Info: Argonne National Lab., IL (United States)


  • Creation: 1994-09-01


  • English


  • Content Description: Rotate-only X-ray CT scanners are preferred for their speed and dose utilization, but suffer from the restriction that the scanned object must fit within the radiation beam. In addition, the ratio of signals unattenuated by air paths to those penetrating thick, dense objects often exceeds the dynamic range of conventional X-ray detectors. Both of these disadvantages can be removed for objects larger than the X-ray beam by taking multiple scans, each of which exposes only part of the object. These partial data sets can then be merged to produce a complete data set. For most objects, it is also possible to separately expose regions in which the ratios between the extremes of attenuation are much lower than that between air and the maximum path length. It is therefore possible to use a higher flux to image denser regions, improving signal-to-noise ratios and yielding images superior to those of larger scanners having the same dynamic range,
  • Physical Description: 13 p.


  • Keyword: Radiation Detectors
  • Keyword: Computerized Tomography
  • Keyword: Positioning
  • Keyword: Modifications
  • Keyword: Nondestructive Testing
  • Keyword: Image Scanners
  • Keyword: Size
  • Keyword: Inspection
  • Keyword: X Radiation
  • Keyword: Experimental Data
  • Keyword: Design
  • Keyword: Data Acquisition Systems
  • Keyword: Performance
  • Keyword: X-Ray Sources
  • Keyword: Image Processing
  • STI Subject Categories: 42 Engineering Not Included In Other Categories


  • Conference: 13. international conference on the application of accelerators in research and industry, Denton, TX (United States), 7-10 Nov 1994


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Other: DE95005852
  • Report No.: ANL/ET/CP--83334
  • Report No.: CONF-941129--19
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/34396
  • Office of Scientific & Technical Information Report Number: 34396
  • Archival Resource Key: ark:/67531/metadc686251


  • Display Note: OSTI as DE95005852