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Content Provider | IEEE Xplore Digital Library |
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Author | Jin-Yung Kim Ji-Koon Park Jang-Yong Choi Byung-Youl Cha Sang-Sik Kang Sang-Ho An Sang-Hee Nam Heung-Kook Choi |
Copyright Year | 2004 |
Description | Author affiliation: Dept. of Biomed. Eng., Inje Univ., Kyungnahm (Jin-Yung Kim) |
Abstract | In this paper, the evaluation of a selenium-based flat-panel digital X-ray detector is described. The prototype detector has a pixel pitch of 139 mum and a total active imaging area of 14 inches times 8.5 inches, making up a total of 3.9 million pixels. Several quantitative parameters have been devised that correlate with the abilities of imaging devices to perform clinical tasks. The concepts of MTF, NPS, and DQE have been well described and are very useful descriptors of resolution, noise, and signal-to-noise ratio transfer ability. Such parameters (sensitivity, leakage current, MTF, NPS, DQE) were examined to evaluate the performance of this system. The sensitivity of 4.82 $nC/mR/cm^{2}$ was measured at 10 V/mum, while leakage current was measured at 270 $pA/cm^{2}.$ The measured MTF at 2 lp/mm was 40%, and the DQE at 1.5 lp/mm was 16% |
Starting Page | 4048 |
Ending Page | 4052 |
File Size | 1455740 |
Page Count | 5 |
File Format | |
ISBN | 0780387007 |
ISSN | 10823654 |
e-ISBN | 0780387015 |
DOI | 10.1109/NSSMIC.2004.1466783 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2004-10-16 |
Publisher Place | Italy |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | X-ray detectors Prototypes Diagnostic radiography X-ray detection Pixel Biomedical measurements Biomedical imaging Radiation detectors Thin film transistors Optical imaging |
Content Type | Text |
Resource Type | Article |
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