Calibration phantom for dual-energy basis material absorption measurements

Christiaan M. Fivez; Patrick Wambacq; Paul Suetens; Emile P. Schoeters

doi:10.1117/12.237822

11 April 1996 Calibration phantom for dual-energy basis material absorption measurements

Christiaan M. Fivez, Patrick Wambacq, Paul Suetens, Emile P. Schoeters

Proceedings Volume 2708, Medical Imaging 1996: Physics of Medical Imaging; (1996) https://doi.org/10.1117/12.237822
Event: Medical Imaging 1996, 1996, Newport Beach, CA, United States

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.

Citation Download Citation

Christiaan M. Fivez, Patrick Wambacq, Paul Suetens, and Emile P. Schoeters "Calibration phantom for dual-energy basis material absorption measurements", Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); https://doi.org/10.1117/12.237822

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