Volume 10, Issue 6-7 pp. 878-886
Full Article

Retroreflective-type Janus microspheres as a novel contrast agent for enhanced optical coherence tomography

Jian Zhang

Jian Zhang

Bioimaging Core, Faculty of Health Sciences, University of Macau, Taipa, Macau SAR, China

These authors contributed equally to this workSearch for more papers by this author
Jing Liu

Jing Liu

Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China

These authors contributed equally to this workSearch for more papers by this author
Li-Mei Wang

Li-Mei Wang

Center for Drug Non-clinical Evaluation and Research, Guangdong Biological Resources Institute, Guangdong Academy of Sciences, Guangzhou, 510900 China

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Zhi-Yuan Li

Zhi-Yuan Li

Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China

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Zhen Yuan

Corresponding Author

Zhen Yuan

Bioimaging Core, Faculty of Health Sciences, University of Macau, Taipa, Macau SAR, China

Corresponding author: e-mail: [email protected], Phone: +853-88224989, Fax: +853-88222314

** These authors contributed equally to this work.

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First published: 24 May 2016
Citations: 20

Abstract

Optical coherence tomography (OCT) is a well-developed technology that utilizes near-infrared light to reconstruct three-dimensional images of biological tissues with micrometer resolution. Improvements of the imaging contrast of the OCT technique are able to further widen its extensive biomedical applications. In this study, Janus microspheres were developed and used as a positive contrast agent for enhanced OCT imaging. Phantom and ex vivo liver tissue experiments as well as in vivo animal tests were conducted, which validated that Janus microspheres, as a novel type of OCT tracer, were very effective in improving the OCT imaging contrast.

figure

Working principle and SEM image of Janus microsphere (top). Enhanced OCT imaging (bottom) of Janus microspheres in zebrafish stomach (blue dash line) and sinusoids (green arrows) of nude liver.

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