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Proceedings Paper

CMOS digital intra-oral sensor for x-ray radiography
Author(s): Xinqiao Liu; Andrew Byczko; Marcus Choi; Lap Chung; Hung Do; Boyd Fowler; Radu Ispasoiu; Kumar Joshi; Todd Miller; Alex Nagy; David Reaves; Brian Rodricks; Doug Teeter; George Wang; Feng Xiao
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Paper Abstract

In this paper, we present a CMOS digital intra-oral sensor for x-ray radiography. The sensor system consists of a custom CMOS imager, custom scintillator/fiber optics plate, camera timing and digital control electronics, and direct USB communication. The CMOS imager contains 1700 x 1346 pixels. The pixel size is 19.5um x 19.5um. The imager was fabricated with a 0.18um CMOS imaging process. The sensor and CMOS imager design features chamfered corners for patient comfort. All camera functions were integrated within the sensor housing and a standard USB cable was used to directly connect the intra-oral sensor to the host computer. The sensor demonstrated wide dynamic range from 5uGy to 1300uGy and high image quality with a SNR of greater than 160 at 400uGy dose. The sensor has a spatial resolution more than 20 lp/mm.

Paper Details

Date Published: 17 March 2011
PDF: 9 pages
Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79614M (17 March 2011); doi: 10.1117/12.878722
Show Author Affiliations
Xinqiao Liu, Fairchild Imaging Inc. (United States)
Andrew Byczko, Fairchild Imaging Inc (United States)
Marcus Choi, Fairchild Imaging Inc (United States)
Lap Chung, Fairchild Imaging Inc (United States)
Hung Do, Fairchild Imaging Inc (United States)
Boyd Fowler, Fairchild Imaging Inc (United States)
Radu Ispasoiu, Fairchild Imaging Inc (United States)
Kumar Joshi, Fairchild Imaging Inc (United States)
Todd Miller, Fairchild Imaging Inc (United States)
Alex Nagy, Fairchild Imaging Inc (United States)
David Reaves, Fairchild Imaging Inc (United States)
Brian Rodricks, Fairchild Imaging Inc (United States)
Doug Teeter, Fairchild Imaging Inc (United States)
George Wang, Fairchild Imaging Inc (United States)
Feng Xiao, Fairchild Imaging Inc (United States)


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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