Practical evaluation of image quality in computed radiographic (CR) imaging systems

Nikunj Desai; Abhinav Singh; Daniel J. Valentino

doi:10.1117/12.844640

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23 March 2010 Practical evaluation of image quality in computed radiographic (CR) imaging systems

Nikunj Desai, Abhinav Singh, Daniel J. Valentino

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Proceedings Volume 7622, Medical Imaging 2010: Physics of Medical Imaging; 76224Q (2010) https://doi.org/10.1117/12.844640
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

A number of complementary metrics are available to assess the performance of digital X-ray imaging systems. However, the sensitivity of these metrics to changes in the electro-optical imaging chain is poorly understood. Some of the commonly used metrics include Contrast to Noise ratio (CNR), limiting spatial resolution, Modulation Transfer Function (MTF), Noise Power Spectrum (NPS) and the Detective Quantum Efficiency (DQE). We evaluated the utility of these metrics in characterizing the imaging plate, imaging system optics and electronic components of computed radiography (CR) systems. We developed practical and easy to use test objects (phantoms) and implemented software to aid in calculating each metric. The results of this research will facilitate the characterization of differences in CR systems using the appropriate metrics.

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Nikunj Desai, Abhinav Singh, and Daniel J. Valentino "Practical evaluation of image quality in computed radiographic (CR) imaging systems", Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76224Q (23 March 2010); https://doi.org/10.1117/12.844640

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