Tiny endoscopic optical coherence tomography probe driven by a miniaturized hollow ultrasonic motor
Name
Chen-2013-Tiny endoscopic opti.pdf
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2.53 MB
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Author(s)
Chen, Tianyuan
Zhang, Ning
Huo, Tiancheng
Wang, Chengming
Zheng, Jing-gao
Zhou, Tieying
Xue, Ping
Date Issued
August 2013
Journal
Journal of Biomedical Optics
Publisher
SPIE
Citation
Chen, Tianyuan, Ning Zhang, Tiancheng Huo, Chengming Wang, Jing-gao Zheng, Tieying Zhou, and Ping Xue. “Tiny endoscopic optical coherence tomography probe driven by a miniaturized hollow ultrasonic motor.” Journal of Biomedical Optics 18, no. 8 (August 1, 2013): 086011.
Version
Final published version
Abstract
We present an endoscopic probe for optical coherence tomography (OCT) equipped with a miniaturized hollow ultrasonic motor that rotates the objective lens and provides an internal channel for the fiber to pass through, enabling 360 deg unobstructed circumferential scanning. This probe has an outer diameter of 1.5 mm, which is ultra-small for motorized probes with an unobstructed view in distal scanning endoscopic OCT. Instead of a mirror or prism, a customized aspheric right-angle lens is utilized, leading to an enlargement of the numerical aperture and thus high transverse resolution. Spectral-domain OCT imaging of bio-tissue and a phantom are demonstrated with resolution of 7.5 μm (axial) × 6.6 μm (lateral) and sensitivity of 96 dB.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1117/1.jbo.18.8.086011
