Abstract
The use of two or more radiographs of an object taken with different x-ray spectral characteristics to infer quantitative values of material density or Z number has been of interest to both the medical and industrial worlds for some time. One method uses monoenergetic isotopic sources with well defined energies in conjunction with standard step wedges and solving the resulting simultaneous equations. Besides the problem of finding isotopic sources with the appropriate energies, you have to have a priori knowledge of the materials in the object.
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References
R. E. Alvarez “Extraction of Energy Dependent Information in Radiography,” Ph.D. Dissertation, Stanford University, 1976.
J. H. Stanley and J. J. LePage, “A New Radiographic Corrosion Inspection Capability,”
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© 1995 Plenum Press, New York
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Morris, R.A., Chancellor, T. (1995). Algorithm for Dual-Energy Radiographic Analysis. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-1987-4_44
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DOI: https://doi.org/10.1007/978-1-4615-1987-4_44
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-5819-0
Online ISBN: 978-1-4615-1987-4
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