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Proceedings Paper

Spectral-domain optical coherence tomography for endoscopic imaging
Author(s): Xiaodong Chen; Qiao Li; Wanhui Li; Yi Wang; Daoyin Yu
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Paper Abstract

Optical coherence tomography (OCT) is an emerging cross-sectional imaging technology. It uses broadband light sources to achieve axial image resolutions on the few micron scale. OCT is widely applied to medical imaging, it can get cross-sectional image of bio-tissue (transparent and turbid) with non-invasion and non-touch. In this paper, the principle of OCT is presented and the crucial parameters of the system are discussed in theory. With analysis of different methods and medical endoscopic system's feature, a design which combines the spectral domain OCT (SDOCT) technique and endoscopy is put forward. SDOCT provides direct access to the spectrum of the optical signal. It is shown to provide higher imaging speed when compared to time domain OCT. At the meantime, a novel OCT probe which uses advanced micromotor to drive reflecting prism is designed according to alimentary tract endoscopic feature. A simple optical coherence tomography system has been developed based on a fiber-based Michelson interferometer and spectrometer. An experiment which uses motor to drive prism to realize rotating imaging is done. Images obtained with this spectral interferometer are presented. The results verify the feasibility of endoscopic optical coherence tomography system with rotating scan.

Paper Details

Date Published: 7 February 2007
PDF: 8 pages
Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 64292X (7 February 2007); doi: 10.1117/12.699443
Show Author Affiliations
Xiaodong Chen, Tianjin Univ. (China)
Qiao Li, Tianjin Univ. (China)
Wanhui Li, Tianjin Univ. (China)
Yi Wang, Tianjin Univ. (China)
Daoyin Yu, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 6429:
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI
James G. Fujimoto; Joseph A. Izatt; Valery V. Tuchin, Editor(s)

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