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Implementation of digital multiplexing for high resolution x-ray detector arrays

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6 Author(s)
Sharma, P. ; Electr. Eng. Dept., State Univ. of New York at Buffalo, Buffalo, NY, USA ; Swetadri Vasan, S.N. ; Titus, A.H. ; Cartwright, A.N.
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We describe and demonstrate for the first time the use of the novel Multiple Module Multiplexer (MMMIC) [1] for a 2×2 array of new electron multiplying charge coupled device (EMCCD) based x-ray detectors [2]. It is highly desirable for x-ray imaging systems to have larger fields of view (FOV) extensible in two directions yet to still be capable of doing high resolution imaging over regions-of-interest (ROI). The MMMIC achieves these goals by acquiring and multiplexing data from an array of imaging modules thereby enabling a larger FOV, and at the same time allowing high resolution ROI imaging through selection of a subset of modules in the array. MMMIC also supports different binning modes. This paper describes how a specific two stage configuration connecting three identical MMMICs is used to acquire and multiplex data from a 2×2 array of EMCCD based detectors. The first stage contains two MMMICs wherein each MMMIC is getting data from two EMCCD detectors. The multiplexed data from these MMMICs is then forwarded to the second stage MMMIC in the similar fashion. The second stage that has only one MMMIC gives the final 12 bit multiplexed data from four modules. This data is then sent over a high speed Camera Link interface to the image processing computer. X-ray images taken through the 2×2 array of EMCCD based detectors using this two stage configuration of MMMICs are shown successfully demonstrating the concept.

Published in:

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Date of Conference:

Aug. 28 2012-Sept. 1 2012

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