Share Email Print
cover

Proceedings Paper

Practical evaluation of image quality in computed radiographic (CR) imaging systems
Author(s): Nikunj Desai; Abhinav Singh; Daniel J. Valentino
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper 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.

Paper Details

Date Published: 23 March 2010
PDF: 10 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76224Q (23 March 2010); doi: 10.1117/12.844640
Show Author Affiliations
Nikunj Desai, Univ. of California, Los Angeles (United States)
iCR Co., Inc (United States)
Abhinav Singh, Univ. of California, Los Angeles (United States)
iCR Co., Inc (United States)
Daniel J. Valentino, Univ. of California, Los Angeles (United States)
iCR Co., Inc (United States)


Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

© SPIE. Terms of Use
Back to Top