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Proceedings Paper

Effects of flowing scatters on measured backscattering signal
Author(s): Wanrong Gao; Maohai Hu
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Paper Abstract

Optical Coherence Tomography (OCT) is a noninvasive cross-sectional imaging modality capable of measuring tissue morphology and function high spatial resolution. The amplitude of the intero-metric heterodyne signal provides a profile of sample reflectivity related to its microstructure and its phase may enable bi-directional blood flowing imaging, termed Color Doppler OCT (CDOCT). In order to evaluate and improve the imaging properties as well as find the appropriate image-processing algorithms, several theoretical models of OCT of biological tissue have been proposed. Most of these models are based on the consideration of both the single scattering and multiple scattering processes of the light within the tissues. However, all these models omitted the effects of moving scatterers on measured backscattering signal. We show that inclusion of this effect is more realized and is of great importance in the calculation and interpretation of the heterodyne signal, evaluation of the system performance as well as calculating the maximum imaging depth of the OCT scanners. The analytical results and a sample result is given.

Paper Details

Date Published: 18 January 2005
PDF: 6 pages
Proc. SPIE 5630, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment II, (18 January 2005); doi: 10.1117/12.570993
Show Author Affiliations
Wanrong Gao, Nanjing Univ. of Science and Technology (China)
Maohai Hu, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 5630:
Optics in Health Care and Biomedical Optics: Diagnostics and Treatment II
Britton Chance; Mingzhe Chen; Arthur E. T. Chiou; Qingming Luo, Editor(s)

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