1 Scope
This document describes the performance metrics associated with dual-energy imaging capable digital X-ray imaging devices meant for medical applications and specifies the methods for their determination.
These metrics can be used to analyse tissue-subtracted images and to evaluate dose performance, noise characteristics, and tissue-subtraction efficacy
of digital X-ray imaging devices. The described methods indicate the procedures to obtain multi-spectral primary data and to compute their derived tissue-subtracted images.
The intended users of this document are manufacturers and well-equipped test laboratories. This document is restricted to digital X-ray imaging devices that are used for single or multiple exposure dual-energy radiographic imaging based
on, for example, CR systems, direct and indirect flat panel-detector based systems.
This document excludes and is not applicable to:
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— digital X-ray imaging devices intended to be used in mammography or in dental radiograp hy;
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— slot scanning digital X-ray imaging devices;
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— computed tomography or cone-beam computed tomography;
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— photon-energy discriminating devices such as photon counting X-ray imaging devices;
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— devices for dynamic imaging (where series of images are acquired, as in fluoroscopy or cardiac imaging).
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— digital X-ray imaging devices intended to be used with radiotherapy beams.