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International Journal of Optics
Volume 2011, Article ID 825629, 12 pages
Review Article

MEMS-Based Endoscopic Optical Coherence Tomography

Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611, USA

Received 31 January 2011; Accepted 1 April 2011

Academic Editor: Jianan Qu

Copyright © 2011 Jingjing Sun and Huikai Xie. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Early cancer detection has been playing an important role in reducing cancer mortality. Optical coherence tomography (OCT), due to its micron-scale resolution, has the ability to detect cancerous tissues at their early stages. For internal organs, endoscopic probes are needed as the penetration depth of OCT is about 1–3 mm. MEMS technology has the advantages of fast speed, small size, and low cost, and it has been widely used as the scanning engine in endoscopic OCT probes. Research results have shown great potential for OCT in endoscopic imaging by incorporating MEMS scanning mirrors. Various MEMS-OCT designs are introduced, and their imaging results are reviewed in the paper.