Technological pathways for 21st century active matrix x-ray imager development

Larry E. Antonuk; Youcef El-Mohri; Kyung-Wook Jee; Qihua Zhao; Amit R. Sawant; Zhong Su; Robert A. Street

doi:10.1117/12.465545

3 May 2002 Technological pathways for 21^st century active matrix x-ray imager development

Larry E. Antonuk, Youcef El-Mohri, Kyung-Wook Jee, Qihua Zhao, Amit R. Sawant, Zhong Su, Robert A. Street

Proceedings Volume 4682, Medical Imaging 2002: Physics of Medical Imaging; (2002) https://doi.org/10.1117/12.465545
Event: Medical Imaging 2002, 2002, San Diego, California, United States

Abstract

In recent years, as a direct result of extensive research and development, a growing number of x-ray imagers based on the powerful concept of active matrix addressing have been introduced to clinical environments worldwide. These imagers consist of thin, large area, glass substrates onto which 2D, pixelated arrays are deposited. Each pixel comprises an amorphous silicon thin-film switch coupled to some form of pixel storage capacitor. The radiation is detected indirectly, by means of an overlying scintillators, or directly, by means of a photoconductor layer. While existing active matrix imagers offer many advantages, the present technology suffers form a variety of distinct limitations and disadvantages that pertain to imaging performance under conditions of low exposure per image frame, as well as to issues of mechanical robustness and cost. In this paper, the possibility that these restrictions could be removed through the adoption of novel, emerging technologies is discussed. The focus of the discussion is primarily on technologies under independent development for large-area electronics and other applications and for which a plausible chance of convergence with x-ray imaging technology exists.

Citation Download Citation

Larry E. Antonuk, Youcef El-Mohri, Kyung-Wook Jee, Qihua Zhao, Amit R. Sawant, Zhong Su, and Robert A. Street "Technological pathways for 21^st century active matrix x-ray imager development", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); https://doi.org/10.1117/12.465545

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