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Proceedings Paper

Calibration phantom for dual-energy basis material absorption measurements
Author(s): Christiaan M. Fivez; Patrick Wambacq; Paul Suetens; Emile P. Schoeters
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Paper Abstract

Dual-energy subtraction imaging uses the spectral differences in x-ray radiation attenuation caused by different tissues to obtain material-selective images. When the subtraction is based on decomposition of the object images into basis material images, accurate calibration measurements must be made. This calibration procedure consists of measuring the absorptions of the two x-ray spectra by a set of known thickness combinations of two chosen basis materials. In this paper a calibration phantom is presented which allows accurate measurements, which allows adjustment to the source-to-detector distance and which is easy to handle. In our laboratory and in the hospital we use the phantom for the implementation of the dual-energy technique on a computed radiography system.

Paper Details

Date Published: 11 April 1996
PDF: 10 pages
Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); doi: 10.1117/12.237822
Show Author Affiliations
Christiaan M. Fivez, Univ. Ziekenhuis Gasthuisberg (Belgium)
Patrick Wambacq, Katholieke Univ. Leuven (Belgium)
Paul Suetens, Univ. Ziekenhuis Gasthuisberg (Belgium)
Emile P. Schoeters, Agfa-Gevaert NV (Belgium)


Published in SPIE Proceedings Vol. 2708:
Medical Imaging 1996: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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