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Proceedings Paper

12-inch-wafer-scale CMOS active-pixel sensor for digital mammography
Author(s): Sung Kyn Heo; Jari Kosonen; Sung Ha Hwang; Tae Woo Kim; Seungman Yun; Ho Kyung Kim
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Paper Abstract

This paper describes the development of an active-pixel sensor (APS) panel, which has a field-of-view of 23.1×17.1 cm and features 70-μm-sized pixels arranged in a 3300×2442 array format, for digital mammographic applications. The APS panel was realized on 12-inch wafers based on the standard complementary metal-oxide-semiconductor (CMOS) technology without physical tiling processes of several small-area sensor arrays. Electrical performance of the developed panel is described in terms of dark current, full-well capacity and leakage current map. For mammographic imaging, the optimized CsI:Tl scintillator is experimentally determined by being combined with the developed panel and analyzing im aging characteristics, such as modulation-transfer function, noise-power spectrum, detective quantum efficiency, image l ag, and contrast-detail analysis by using the CDMAM 3.4 phantom. With these results, we suggest that the developed CMOS-based detector can be used for conventional and advanced digital mammographic applications.

Paper Details

Date Published: 16 March 2011
PDF: 11 pages
Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79610O (16 March 2011); doi: 10.1117/12.878053
Show Author Affiliations
Sung Kyn Heo, Vatech Humanray Co., Ltd. (Korea, Republic of)
Jari Kosonen, Vatech Humanray Co., Ltd. (Korea, Republic of)
Sung Ha Hwang, Vatech Humanray Co., Ltd. (Korea, Republic of)
Tae Woo Kim, Vatech Humanray Co., Ltd. (Korea, Republic of)
Seungman Yun, Pusan National Univ. (Korea, Republic of)
Ho Kyung Kim, Pusan National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7961:
Medical Imaging 2011: Physics of Medical Imaging
Norbert J. Pelc; Ehsan Samei; Robert M. Nishikawa, Editor(s)

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