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Proceedings Paper

Contrast improvement for swept source optical coherence tomography image of sub-surface tissue
Author(s): Xinyu Li; Shanshan Liang; Jun Zhang
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Paper Abstract

Swept source optical coherence tomography (SSOCT) is an attractive biological imaging technology due to its advantages of simple setup and high imaging speed. As the light intensity attenuated rapidly in high scattering biological tissues, the contrast of OCT image will drop with depth. In this paper a new method was introduced to compensate the attenuation of imaging contrast in SSOCT. The interference signal was divided into two channels of analog to digital converter (ADC) with a splitting ratio of 1:5. The higher level signal in one channel was used to reconstruct deeper structure of tissue and the lower level signal in the other channel was used to reconstruct surface structure of tissue. Lowfrequency signals in one channel were filtered by a high pass filter and then combined with the signal in the other channel to obtain a high contrast image in both surface and deep area of tissue. Human finger and porcine airway imaging obtained with the system show that the contrast of SSOCT images can be improved in deeper region of tissue.

Paper Details

Date Published: 20 February 2017
PDF: 6 pages
Proc. SPIE 10053, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXI, 100532R (20 February 2017); doi: 10.1117/12.2251650
Show Author Affiliations
Xinyu Li, Sun Yat-Sen Univ. (China)
SYSU-CMU Shunde International Joint Research Institute (China)
Shanshan Liang, Sun Yat-Sen Univ. (China)
Jun Zhang, Sun Yat-sen Univ. (China)
SYSU-CMU Shunde International Joint Research Institute (China)


Published in SPIE Proceedings Vol. 10053:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXI
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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