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Proceedings Paper

CCD-based detector for full-field digital mammography
Author(s): Martin J. Stanton; Walter Charles Phillips; Alexander X. Stewart; Laura B. Smilowitz; Mark Bennett Williams; Piero Simoni; Charles Ingersoll; Thomas G. McCauley; Hua Qian
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Paper Abstract

We describe a 19 X 28 cm digital x-ray detector for use in clinical screening mammography. The detector design uses 6 CCD/taper modules tiled together to provide a full breast image without any image gaps at the tapers interfaces. We have attempted to limit the cost and mechanical complexity of the detector while maintaining a high DQE and a resolution cutoff of 10 lp/mm. The camera design employs a Gd2O2S phosphor x-ray converter, 3.3:1 demagnifying fiber optic tapers, and front-illuminated Thomson THX 7899 CCDs (2048 X 2048, 14 micrometer pixels) coupled to the tapers with optical epoxy. The effective pixel size in the 4000 X 6000 pixel full image is 47 micrometer. The signal for each pixel is digitized to 16-bits and the effective dynamic range is approximately 9000. Readout time for the 48 Mbyte image is 8s. Each CCD is cooled to -3 degrees Celsius by a thermoelectric (TE) cooling module.

Paper Details

Date Published: 28 May 1999
PDF: 9 pages
Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); doi: 10.1117/12.349554
Show Author Affiliations
Martin J. Stanton, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)
Walter Charles Phillips, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)
Alexander X. Stewart, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)
Laura B. Smilowitz, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)
Mark Bennett Williams, Univ. of Virginia Health Sciences Ctr. (United States)
Piero Simoni, Univ. of Virginia Health Sciences Ctr. (United States)
Charles Ingersoll, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)
Thomas G. McCauley, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)
Hua Qian, Rosenstiel Basic Medical Sciences Research Ctr./Brandeis Univ. (United States)


Published in SPIE Proceedings Vol. 3659:
Medical Imaging 1999: Physics of Medical Imaging
John M. Boone; James T. Dobbins, Editor(s)

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