Three-dimensional optical coherence tomography employing a 2-axis microelectromechanical scanning mirror

We present a three-dimensional (3-D) optical coherence tomography (OCT) system based on a dual axis microelectromechanical system (MEMS) mirror. The MEMS mirror provides high-speed, high resolution 2-axis scanning while occupying a very small volume with extremely low power consumption. The dimensio...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2005-07, Vol.11 (4), p.806-810
Main Authors: Woonggyu Jung, Jun Zhang, Lei Wang, Wilder-Smith, P., Zhongping Chen, McCormick, D.T., Tien, N.C.
Format: Article
Language:English
Subjects:
2 axis miceoelectromechanical scanning mirror
Biomedical imaging
Biomedical optical imaging
Delivery systems
Energy consumption
High speed
High speed optical techniques
Linearity
Microelectromechanical systems
Micromechanical devices
Mirrors
Optical Coherence Tomography
Optical signal processing
Scanners
Scanning
three-dimensional optical coherence tomography (3D OCT)
Tomography
Ultraviolet sources
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Summary:We present a three-dimensional (3-D) optical coherence tomography (OCT) system based on a dual axis microelectromechanical system (MEMS) mirror. The MEMS mirror provides high-speed, high resolution 2-axis scanning while occupying a very small volume with extremely low power consumption. The dimensions of the mirror are 600/spl times/600 /spl mu/m, and both axes are capable of scanning up to 30 degree angles at frequencies greater than 3 kHz with good linearity. A 3-D image set is acquired when the MEMS mirror is integrated with the fiber-based OCT system. Via 2-axis lateral scanning, combined with an axial scan, a volume (2/spl times/2/spl times/1.4 mm) image of tissue, including a cancerous region, from a hamster cheek pouch was obtained. Using a signal processing technique, image data is normally presented by 3-volume showing views at arbitrary angles and locations. The objective of this work is to show the capabilities of a 3-D OCT system utilizing a MEMS scanner as this technology can readily by applied to realize OCT beam delivery systems such as hand held scanners and endoscopic probes. A MEMS based 3-D OCT system employing a high speed, small volume scanner may have the potential to expand the application area of OCT and revolutionize areas of clinical medicine as well as medical research.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2005.857683