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  • Title: Rapid-scanning forward-imaging miniature endoscope for real-time optical coherence tomography.
    Author: Liu X, Cobb MJ, Chen Y, Kimmey MB, Li X.
    Journal: Opt Lett; 2004 Aug 01; 29(15):1763-5. PubMed ID: 15352362.
    Abstract:
    We developed a miniature endoscope that is capable of rapid lateral scanning and is suitable for real-time forward-imaging optical coherence tomography (OCT). The endoscope has an outer diameter of 2.4 mm, consisting of a miniature tubular lead zirconate titanate (PZT) actuator, a single-mode fiber-optic cantilever, and a graded-index lens. Rapid lateral scanning at 2.8 kHz is achieved when the fiber-optic cantilever is resonated with the PZT actuator. This allows OCT imaging to be performed by fast lateral beam scanning followed by slow depth scanning, which is different from the conventional OCT imaging sequence. Real-time OCT imaging with the endoscope operated in the new image acquisition sequence at 6 frames/s is demonstrated.
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