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Proceedings Paper

Preliminary performance characteristics of a dual-energy KCD
Author(s): Robert J. Endorf; Sunil Kulatunga; David C. Spelic; Stephen R. Thomas; Frank A. DiBianca; Herbert D. Zeman; George C. Giakos
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Paper Abstract

A kinestatic charge detector (KCD) with segmented signal-collection fingers was constructed to evaluate the dual-energy x-ray imaging performance of a KCD. The front segments of the KCD signal-collectors produce a digital low-energy image and the back segments produce a digital high-energy image. A gap between the front and back signal-collectors is used as a filter to increase the separation between the mean energies absorbed in the front and back segments. Preliminary measurements have been performed on the dual-energy KCD to determine its dual-energy imaging characteristics. The KCD output signal has been measured as a function of depth in the chamber. The ion drift velocity, modulation transfer function (MTF), detective quantum efficiency (DQE) and Wiener spectrum have been determined for both the front (low-energy) and back (high-energy) signal detection regions of the KCD.

Paper Details

Date Published: 8 May 1995
PDF: 9 pages
Proc. SPIE 2432, Medical Imaging 1995: Physics of Medical Imaging, (8 May 1995); doi: 10.1117/12.208383
Show Author Affiliations
Robert J. Endorf, Univ. of Cincinnati (United States)
Sunil Kulatunga, Univ. of Cincinnati (United States)
David C. Spelic, Univ. of Cincinnati (United States)
Stephen R. Thomas, Univ. of Cincinnati (United States)
Frank A. DiBianca, Univ. of Tennessee/Memphis (United States)
Herbert D. Zeman, Univ. of Tennessee/Memphis (United States)
George C. Giakos, Univ. of Akron (United States)

Published in SPIE Proceedings Vol. 2432:
Medical Imaging 1995: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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