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Proceedings Paper

Theoretical performance of amorphous silicon imagers in diagnostic radiology
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Paper Abstract

Flat-panel imaging arrays fabricated from hydrogenated amorphous silicon (a-Si:H) are being developed for application in diagnostic x-ray imaging. The potential performance of such imagers is analyzed by means of modeling the imaging system as a cascade of distinct gain and spreading stages. The relative number of image quanta at each stage in the system is represented in a quantum accounting diagram (QAD), and the detective quantum efficiency (DQE) of the imaging system under radiographic, fluoroscopic, and mammographic conditions is calculated. Such an analysis provides a means of quantitatively evaluating and optimizing imager performance for a given application.

Paper Details

Date Published: 11 April 1996
PDF: 10 pages
Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); doi: 10.1117/12.237810
Show Author Affiliations
Jeffrey H. Siewerdsen, Univ. of Michigan Medical Ctr. (United States)
Larry E. Antonuk, Univ. of Michigan Medical Ctr. (United States)
John Yorkston, Univ. of Michigan Medical Ctr. (United States)


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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