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Journal of Electronic Imaging

Comparison of a CMOS-based and a CCD-based digital x-ray imaging system: Observer studies
Author(s): Qirong Zhang; Yuhua Li; Ben Steele; Xizeng Wu; Wei R. Chen; John X. Rong; Hong Liu
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Paper Abstract

The purpose of this study is to compare the performance of a complementary metal–oxide–semiconductor (CMOS)-based digital x-ray imaging system with that of a charge-coupled device (CCD)-based system for small animal research. A CMOS-based digital x-ray imaging system was developed and tested. The core of this system is a detector module consisting of eight joint CMOS chips, each having a size of 512×1024 pixels with a readout unit on the side. The pixel size of the CMOS detectors is 0.048 mm. The contrast detail detectability of the CMOS-based system was studied using different phantoms, and compared with that of a CCD-based digital imaging system. The contrast detail curves of the CMOS-based image system, obtained from the observer-based studies, are highly comparable to the CCD-based imaging system, particularly at higher x-ray exposures. The images of fine structures of a mouse, acquired by the CMOS system, demonstrated the capability of the system in the studies of small animals. With integration potential, manufacturability, and low costs, the CMOS-based imaging systems could be used in animal studies and potentially become useful clinical tools for diagnosis.

Paper Details

Date Published: 1 April 2005
PDF: 6 pages
J. Electron. Imag. 14(2) 023002 doi: 10.1117/1.1902763
Published in: Journal of Electronic Imaging Volume 14, Issue 2
Show Author Affiliations
Qirong Zhang, Univ. of Oklahoma (United States)
Yuhua Li, Univ. of Oklahoma (United States)
Ben Steele, Univ. of Oklahoma (United States)
Xizeng Wu, The Univ. of Alabama at Birmingham (United States)
Wei R. Chen, Univ. of Central Oklahoma (United States)
John X. Rong, Univ. of Oklahoma Health Sciences Ctr. (United States)
Hong Liu, Univ. of Oklahoma (United States)

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