1. Articles from Ming-Rung Tsai

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    1. Mirau-type full-field optical coherence tomography with switchable partially spatially coherent illumination modes

      Mirau-type full-field optical coherence tomography with switchable partially spatially coherent illumination modes

      A crystalline-fiber-based Mirau-type full-field optical coherence tomography (FF-OCT) system utilizing two partially coherent illumination modes is presented. Using a diode-pumped Ti:sapphire crystalline fiber with a high numerical aperture, spatially-incoherent broadband emission can be generated with high radiance. With two modes of different spatial coherence settings, either deeper penetration depth or higher B-scan rate can be achieved. In a wide-field illumination mode, the system functions like FF-OCT with partially coherent illumination to improve the penetration depth. In a strip-field illumination mode, a compressed field is generated on the sample, and a low-speckle B-scan can be acquired by compounding pixel lines ...

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    2. In vivo dual-mode full-field optical coherence tomography for differentiation of types of melanocytic nevi

      In vivo dual-mode full-field optical coherence tomography for differentiation of types of melanocytic nevi

      Significance: Melanocytic nevi represent the most common dermal melanocytic lesions in humans. Nevus is typically diagnosed clinically with the naked eye or with dermoscopy. However, it is essential to identify the type of nevus by invasive biopsy for histopathological examination. The use of noninvasive imaging tools can be used to evaluate the types of nevi to reduce unnecessary excisions of benign entities. Aim: To evaluate the feasibility of using en face and cross-sectional full-field optical coherence tomography (FF-OCT) in differentiation of melanocytic nevi that can facilitate the reduction of unnecessary excisions of benign entities. Approach: Dual-mode Mirau-type FF-OCT for cross-sectional ...

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    1-2 of 2
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    1. (1 articles) National Taiwan University
    2. (1 articles) Northwestern University
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