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Proceedings Paper

Progress in gas detector technology for medical imaging research
Author(s): George C. Giakos; Samir Chowdhury; Bindu Pillai; P. Ghotra; Srinivasan Vedantham; Amlan Dasgupta; Frank A. DiBianca; Sreenivas Devidas; Robert J. Endorf
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Paper Abstract

The x-ray capture, conversion into charge carriers, ion transport mechanisms and image formation mechanisms within a high-gas pressure digital radiographic system, operating up to 60 atm., are presented and analyzed. In detail, the physics of the high-pressure KCD imaging detectors is exposed, analyzed and related to the detector and image quality parameters. Specifically, this study indicates that ion diffusion cannot account for all the experimental observations. It advances the hypothesis that, at sufficiently high pressures, formation of molecular clusters with narrowed mobility distribution take place, through energy exchange mechanism, with local potential forces such that they compensate the space charge distortion of the applied field strength.

Paper Details

Date Published: 11 April 1996
PDF: 10 pages
Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); doi: 10.1117/12.237842
Show Author Affiliations
George C. Giakos, Univ. of Akron (United States)
Samir Chowdhury, Univ. of Akron (United States)
Bindu Pillai, Univ. of Akron (United States)
P. Ghotra, Univ. of Akron (United States)
Srinivasan Vedantham, Univ. of Akron (United States)
Amlan Dasgupta, Univ. of Akron (United States)
Frank A. DiBianca, Univ. of Tennessee/Memphis (United States)
Sreenivas Devidas, Johns Hopkins Univ. (United States)
Robert J. Endorf, Univ. of Cincinnati (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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