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23 February 2010 Computed radiography imaging based on high-density 670-nm VCSEL arrays
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Proceedings Volume 7557, Multimodal Biomedical Imaging V; 75570H (2010)
Event: SPIE BiOS, 2010, San Francisco, California, United States
Although vertical cavity surface emitting lasers (VCSELs) have traditionally found their place in high-speed communication links, the recent advancements of VCSELs emitting in the visible spectrum has sparked interest for new applications in scanning and imaging. Compared to other lasers, VCSELs have many advantageous characteristics including compact size, low power requirements, low cost, and high reliability. VCSELs also offer the unique ability to be fabricated in one- or two-dimensional arrays, making it possible for multiple VCSELs on a single chip to perform the same function as a mechanically scanned beam. One such application is computed radiography (CR), which provides an efficient solution for digitizing and electronically storing x-ray images. In this work, we demonstrate a 1-inch prototype CR scanner based on high-density VCSEL arrays. The device is capable of generating very fast scans with no moving parts, and has the potential to increase throughput, stability, and image quality. In this paper, we discuss the design and performance of this scanner and demonstrate X-ray image acquisition with resolution exceeding 5 line pairs per millimeter (lp/mm).
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Matthew M. Dummer, Klein Johnson, Mikael Witte, William K. Hogan, and Mary Hibbs Brenner "Computed radiography imaging based on high-density 670-nm VCSEL arrays", Proc. SPIE 7557, Multimodal Biomedical Imaging V, 75570H (23 February 2010);

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