Resolution Improvement with Two-Dimensional Digital Focusing Method in Optical Coherence Tomography

Abstract:

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This paper presents a two-dimensional (2D) digital focusing method to alleviate the compromise between the resolution and depth of field (DOF) in spectral domain optical coherence tomography (SDOCT). A scalar diffraction model is developed to simulate the wave propagation process from out-of-focus scatterers and the inverse scattering problem is solved. The wavenumber domain algorithm is applied to improve the transverse resolution, and the matched filter to improve the axial resolution. Image reconstruction with spatially invariant resolution can be achieved. The 2D imaging experimental results of fresh pig liver prove the effectiveness of the proposed method.

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Periodical:

Edited by:

Han Zhao

Pages:

4032-4035

DOI:

10.4028/www.scientific.net/AMM.130-134.4032

Citation:

Y. Lei et al., "Resolution Improvement with Two-Dimensional Digital Focusing Method in Optical Coherence Tomography", Applied Mechanics and Materials, Vols. 130-134, pp. 4032-4035, 2012

Online since:

October 2011

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$35.00

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