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Proceedings Paper

Large-format high-performance CCD sensor for medical x-ray applications
Author(s): William Des Jardin; Christopher Parks; Hung Doan; Neal Kurfiss; Keith Wetzel
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Paper Abstract

CCD image sensors have been utilized as the detectors in digital spot mammography for needle biopsy systems. The requirements of a detector for this application are large sensing area, large pixel size, moderate resolution, and low noise. A large area full-frame CCD image sensor has been developed that is 50 mm X 50 mm with 2084 X 2084 pixels. It is manufactured using a true two-phase, transparent gate, buried channel CCD process. The transparent gate process improves the quantum efficiency from 40 percent to 55 percent at 540 nm. The true two-phase CCD operates in accumulation mode for low dark current without compromising charge capacity. The sensor has two different output amplifiers optimized for either low signal applications or high dynamic range applications. At a 2 MHz pixel rate the dynamic range is 84 dB or 88 dB depending on which output amplifier is selected. The large sensor format allows the elimination of the demagnification requirement in digital spot mammography applications and may be useful for mid-field digital diagnostic systems.

Paper Details

Date Published: 25 April 2000
PDF: 9 pages
Proc. SPIE 3977, Medical Imaging 2000: Physics of Medical Imaging, (25 April 2000); doi: 10.1117/12.384490
Show Author Affiliations
William Des Jardin, Eastman Kodak Co. (United States)
Christopher Parks, Eastman Kodak Co. (United States)
Hung Doan, Eastman Kodak Co. (United States)
Neal Kurfiss, Eastman Kodak Co. (United States)
Keith Wetzel, Eastman Kodak Co. (United States)


Published in SPIE Proceedings Vol. 3977:
Medical Imaging 2000: Physics of Medical Imaging
James T. Dobbins; John M. Boone, Editor(s)

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