1. Alternative Contrast Mechanism in Optical Coherence Tomography: Temporal Speckle Synchronization Effects

    Alternative Contrast Mechanism in Optical Coherence Tomography: Temporal Speckle Synchronization Effects

    We propose an alternative optical coherence tomography (OCT) contrast mechanism based on analysis of speckle temporal synchronization using B-mode OCT structural images. We show that the changes in synchronized speckle intensities with time may be used to distinguish between different tissue types, thus providing a novel and potentially useful contrast for OCT imaging. The developed methodology is tested in scattering flow phantoms, and in vivo on cervical cancer tumour grown within a mouse dorsal skin window chamber model. Derived speckle synchronization metric is compared with autocorrelation function analysis to demonstrate its different nature. The phantom and pre-clinical in vivo results ...

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