Optical coherence tomography based projected index computed tomography

Zhengming Zhou; Zhihua Ding; Yaliang Yang

doi:10.1117/12.741436

3 May 2007 Optical coherence tomography based projected index computed tomography

Zhengming Zhou, Zhihua Ding, Yaliang Yang

Proceedings Volume 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine; 65342U (2007) https://doi.org/10.1117/12.741436
Event: Fifth International Conference on Photonics and Imaging in Biology and Medicine, 2006, Wuhan, China

Abstract

Projected index computed tomography (PICT) is an emerging noninvasive imaging technique that can provide tomographic mapping of sample's refractive index. In this paper, we report a PICT system developed on the basis of a fiber-optic OCT system. The tomographic mapping is reconstructed with convolution back projection algorithm using a series of angular projection data collected by optical coherence tomography (OCT) at sequential orientations. Measurement of refractive index distribution of a glass tube is carried out. The result shows that the developed system has high resolution and sensitivity to discriminate tube boundaries. With index information involved, the reconstructed PICT image is free of distortions, which are inherent artifacts of conventional OCT image.

Citation Download Citation

Zhengming Zhou, Zhihua Ding, and Yaliang Yang "Optical coherence tomography based projected index computed tomography", Proc. SPIE 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine, 65342U (3 May 2007); https://doi.org/10.1117/12.741436

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