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Proceedings Paper

Se-based flat-panel detector for screening mammography
Author(s): Brad T. Polischuk; Serge Savard; Vincent Loustaneau; Marc Hansroul; Sebastien Cadieux; Anne Vaque
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Paper Abstract

A selenium-based flat-panel direct converter detector suitable for digital mammography was developed. The detector is based on a TFT-array with a resolution of 2816 X 2048 pixels, and a pixel pitch of 85 micrometers . Although the geometric fill factor for each pixel is around 70% , the effective fill factor for the detector is closer to 88% due to internal electric field shaping within the selenium layer. A selenium multilayer p-i-n structure of 200 micrometers was deposited onto the array by selectively doping the regions near each contact to produce unipolar conducting blocking layers. This structure absorbs more than 95% of a typical mammography beam.

Paper Details

Date Published: 28 June 2001
PDF: 8 pages
Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430884
Show Author Affiliations
Brad T. Polischuk, ANRAD Corp. (Canada)
Serge Savard, ANRAD Corp. (Canada)
Vincent Loustaneau, ANRAD Corp. (Canada)
Marc Hansroul, ANRAD Corp. (Canada)
Sebastien Cadieux, ANRAD Corp. (Canada)
Anne Vaque, ANRAD Corp. (Canada)

Published in SPIE Proceedings Vol. 4320:
Medical Imaging 2001: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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