1. Articles from Rongguang Liang

    1-6 of 6
    1. Biomedical Optical Imaging Technologies Design and Applications (Book)

      Biomedical Optical Imaging Technologies Design and Applications (Book)

      Biomedical optics is a rapidly growing area of research that has passed the “tipping point” for technology transfer, with significant momentum toward commercialization. Designing an imaging technique to meet the specific application requirements is one of the keys in the development and commercialization of new imaging technologies. It requires a solid understanding of imaging technologies and special requirements for imaging applications; it also encompasses the selection of optical configurations, light sources, optical components, detectors, illumination and imaging system designs, and testing. This book will provide an introduction to principles, designs, and applications of a number of imaging technologies, including spectroscopy ...

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    2. Apparatus for caries detection

      Apparatus for caries detection
      An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state ...
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      Mentions: Rongguang Liang
    3. Optical detection of dental caries

      A method for caries detection uses an image capture device (30, 32) to obtain fluorescence image data from the tooth (20) by illuminating the tooth to excite fluorescent emission. A first enhanced image of the tooth is then obtained by illuminating the tooth at a first incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. A second enhanced image of the tooth is then obtained by illuminating the tooth at a second incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and ...
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      Mentions: Rongguang Liang
    4. Apparatus For Dental Oct Imaging (Wo 2008/063605)

      An apparatus (10) for obtaining an image of a tooth (20) includes an image sensor and a white light source (12) providing broadband polychromatic light and an ultraviolet light source providing narrow-band light. A combiner (15) directs broadband polychromatic light and narrow band light along a common illumination path to illuminate the tooth. A polarization beamsplitter (18) directs polarized light from the illumination path along an optical axis (216). An optical coherence tomography (OCT) imaging apparatus (70) splits the low coherence light into a sample path and a reference path and a dichroic element (78) directs the polarized illumination and ...
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      Mentions: Rongguang Liang
    5. LOW COHERENCE DENTAL OCT IMAGING

      (WO/2008/033217) CARESTREAM HEALTH, INC. [US/US]; 150 Verona Street, Rochester, NY 14608 (US) (All Except US). LIANG, Rongguang [CN/US]; 16 Millford Crossing, Penfield, New York 14526 (US) (US Only). MARCUS, Michael A. [US/US]; 9 Mendonshire Drive, Honeoye Falls, New York 14472 (US) (US Only). BURNS, Peter D. [US/US]; 36 Norbrook Road, Fairport, New York 14450 (US) (US Only). WONG, Victor C. [US/US]; 44 Brightwoods Lane, Rochester, New York 14623 (US) (US Only).
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      Mentions: Rongguang Liang
    6. Optical design of a multimodal imaging system

      Optical design of a multimodal imaging system
      A multimodal imaging system has been developed for tooth tissue imaging. This imaging system is designed to obtain one or more two-dimensional images of the tooth tissue, and those two-dimensional images are rendered with advanced algorithms to provide a high-contrast image. This system combines polarized reflectance imaging, fluorescence imaging, and optical coherence tomography (OCT) imaging. The imaging system design, as well as some experimental results, will be discussed in the presentation
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      Mentions: Rongguang Liang
    1-6 of 6
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    Optical design of a multimodal imaging system Apparatus for caries detection Biomedical Optical Imaging Technologies Design and Applications (Book) New Endoscopic Technology Helps Diagnose Esophageal Cancer Quickly Bioptigen Unveils the Envisu IntraSurgical OCT System for Real-time Imaging During Ophthalmic Surgery Detection of early changes in caries lesion using QLF-D and OCT Relationship Between Presence of Foveal Bulge in Optical Coherence Tomographic Images and Visual Acuity After Rhegmatogenous Retinal Detachment Repair Constructing 3D models of the pediatric upper airway from long range optical coherence tomography image Imaging of Naive Myopic Choroidal Neovascularization by Spectral-Domain Optical Coherence Tomography Iowa City VA Received a 2014 NIH Grant for Glaucoma Assessment using a Multimodality Image Analysis Approach Wavefront Error Correction with Adaptive Optics in Diabetic Retinopathy Modern non-invasive diagnostic techniques in the detection of early cutaneous melanoma