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Proceedings Paper

Phantoms For The Accurate Simulation Of Energy-Dependent Patient/X-Ray Beam Interactions
Author(s): Robert J. Jennings
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Paper Abstract

Many quality control procedures in diagnostic radiology require the accurate simulation of the x-ray spectrum transmitted by the patient. Measurements of the contrast produced by mammographic imaging systems and the adjustment of phototimers used with rare earth screens are examples of such procedures. An analytical method for designing two-component phantoms which accurately simulate not only the narrow-beam attenuation but also the scattering properties of specified thicknesses of given tissue compositions is presented. As an example, a mammography phantom composition which matches both the narrow-beam attenuation and the scattering of 50% adipose/50% glandular breast tissue to better than ±0.5% at x-ray energies from 10 to 75 keV is described. An extension of the method to the design of three-component materials with improved simulation properties (±0.1%) is also described. These materials are suitable for tissue simulation in computed tomography (CT) applications.

Paper Details

Date Published: 16 July 1981
PDF: 3 pages
Proc. SPIE 0273, Application of Optical Instrumentation in Medicine IX, (16 July 1981); doi: 10.1117/12.931795
Show Author Affiliations
Robert J. Jennings, Food and Drug Administration (United States)

Published in SPIE Proceedings Vol. 0273:
Application of Optical Instrumentation in Medicine IX
James A. Mulvaney; Joel E. Gray; Arthur G. Haus; William S. Properzio, Editor(s)

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