1. Segmentation of the Urothelium in Optical Coherence Tomography Images with Dynamic Contrast

    Segmentation of the Urothelium in Optical Coherence Tomography Images with Dynamic Contrast

    Significance: Speckle variations induced by intracellular motion (IM) in the urothelium was observed in optical coherence tomography (OCT) images. It is feasible to use the IM as a dynamic contrast to segment the urothelium with only two sequential OCT images. This new method opens the possibility of tracking the distribution of the urothelial cells to identify the microinvasion of bladder tumors. Approach: With fresh porcine bladder tissue, IM was analyzed by tracking speckle variations using autocorrelation function, then quantified with CONTINE algorism to identify the decorrelation time (DT) of the speckle variations. Variance analysis is conducted to show IM amplitude ...

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