Theoretical performance of amorphous silicon imagers in diagnostic radiology

Jeffrey H. Siewerdsen; Larry E. Antonuk; John Yorkston

doi:10.1117/12.237810

11 April 1996 Theoretical performance of amorphous silicon imagers in diagnostic radiology

Jeffrey H. Siewerdsen, Larry E. Antonuk, John Yorkston

Proceedings Volume 2708, Medical Imaging 1996: Physics of Medical Imaging; (1996) https://doi.org/10.1117/12.237810
Event: Medical Imaging 1996, 1996, Newport Beach, CA, United States

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.

Citation Download Citation

Jeffrey H. Siewerdsen, Larry E. Antonuk, and John Yorkston "Theoretical performance of amorphous silicon imagers in diagnostic radiology", Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); https://doi.org/10.1117/12.237810

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