1. Feature Of The Week 07/01/2018: Endoscopic Optical Coherence Tomography with a Flexible Fiber Bundle

    Feature Of The Week 07/01/2018: Endoscopic Optical Coherence Tomography with a Flexible Fiber Bundle

    We demonstrate in vivo endoscopic optical coherence tomography (OCT) imaging in the forward direction using a flexible fiber bundle (FB). In comparison to current conventional forward-looking probe schemes, our approach simplifies the endoscope design by avoiding the integration of any beam steering components in the distal probe end due to two-dimensional scanning of a focused light beam over the proximal FB surface. We describe the challenges that arise when OCT imaging with an FB is performed, such as multimoding or cross coupling. The performance of different FBs varying in parameters, such as numerical aperture, core size, core structure, and flexibility, was consequently compared, and image quality degrading artifacts were described in detail. Based on our findings, we propose an optimal FB design for endoscopic OCT imaging.

    For more information see recent Article. Courtesy Lara M. Wurster from Medical University of Vienna.

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