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Appl. Phys. Express 4 (2011) 097001 (3 pages)  |Previous Article| |Next Article|  |Table of Contents|
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Microvascular Imaging Using Swept-Source Optical Coherence Tomography with Single-Channel Acquisition

Meng-Tsan Tsai1,2,3, Ting-Ta Chi4, Hao-Li Liu1, Feng-Yu Chang1, Chih-Hsun Yang5, Cheng-Kuang Lee4, and Chih-Chung Yang4,6

1Department of Electrical Engineering, Chang Gung University, Kweishan, Taoyuan 33302, Taiwan
2Graduate Institute of Medical Mechatronics, Chang Gung University, Kweishan, Taoyuan 33302, Taiwan
3Healthy Aging Research Center, Chang Gung University, Kweishan, Taoyuan 33302, Taiwan
4Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
5Department of Dermatology, Chang Gung Memorial Hospital, Kweishan, Taoyuan 33302, Taiwan
6Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan

(Received July 5, 2011; accepted July 26, 2011; published online August 12, 2011)

This study proposes a new approach to improve the phase stability for swept-source optical coherence tomography (SS-OCT) with single-channel acquisition. This approach can improve the phase instability due to the A-scan trigger jitter from the swept source, or the asynchronization between the A-scan trigger and high-speed digitizer, which enables the visualization of vascular structures by SS-OCT. Aside from reducing the phase noise of the OCT system, only one channel is required for the A-scan trigger, data storage, and wavelength calibration by implementing the proposed approach. Finally, human skin was scanned in vivo to demonstrate the vascular images. ©2011 The Japan Society of Applied Physics

URL: http://apex.jsap.jp/link?APEX/4/097001/
DOI: 10.1143/APEX.4.097001
PACS: 87.85.-d, 42.30.Wb, 07.05.Hd


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