24 August 2016 Angular compounding by full-channel B-scan modulation encoding for optical coherence tomography speckle reduction
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Abstract
We describe an angular compounding method by full-channel B-scan modulation encoding for speckle reduction in optical coherence tomography. The complex-valued spectral interferogram (SI) is reconstructed by removing one of the conjugate terms in the depth space. Fourier transform of the complex SI along the lateral direction enables a full-channel (with both negative and positive Fourier space) for B-scan modulation in the spatial frequency (ν) domain. A full-size probe beam, determined by the scanning mirror size, is centered on the mirror pivot, which allows the negative and positive half-channels working in parallel. Compared with the existing method, where only a half-channel (negative or positive) works alone, the proposed full-channel method offers more than twice the performance in speckle reduction. The feasibility of the proposed full-space approach is validated through both the phantom and in vivo human thumbnail experiments.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Pei Li, Pei Li, Liping Zhou, Liping Zhou, Yang Ni, Yang Ni, Zhihua Ding, Zhihua Ding, Peng Li, Peng Li, } "Angular compounding by full-channel B-scan modulation encoding for optical coherence tomography speckle reduction," Journal of Biomedical Optics 21(8), 086014 (24 August 2016). https://doi.org/10.1117/1.JBO.21.8.086014 . Submission:
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