1. Real-time surface tracking system using common-path spectral domain optical coherence tomography

    Real-time surface tracking system using common-path spectral domain optical coherence tomography

    An enhanced surface tracking system based on optical coherence tomography (OCT) modality has been developed and tested for use in a surgical guidance system. A surface detection algorithm based on a Savitzky-Golay filter of A-scan data and thresholding was applied to real-time depth tracking. The algorithm output controlled a motorized stage to adjust the probe position according to the sample’s topological variance in real-time. As a result, the root mean square error (RMSE: 4.2 μ m) of our algorithm was relatively lower than the conventional method (RMSE: 16.6 μ m). Also, OCT images obtained using the algorithm showed a ...

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