1. Qian Li

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    1. Mentioned In 13 Articles

    2. Retinal pulse wave velocity measurement using spectral-domain optical coherence tomography

      Retinal pulse wave velocity measurement using spectral-domain optical coherence tomography
      The human eyes provide a natural window for noninvasive measurement of the pulse wave velocity (PWV) of small arteries. By measuring the retinal PWV, the stiffness of small arteries can be assessed, which may better detect early vascular diseases. Therefore, retinal PWV measurement has attracted increasing attention. In this study, a jump-scanning method was proposed for non-invasive measurement of retinal PWV using spectral-domain OCT. The jump-scanning method uses the phase-resolved ...
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    3. Dual band dual focus optical coherence tomography for imaging the whole eye segment

      Dual band dual focus optical coherence tomography for imaging the whole eye segment
      We developed an improved dual band dual focus spectral domain optical coherence tomography (SD-OCT) for in vivo 2D/3D imaging of the whole eye segment, including the whole anterior segment and retina. The system featured two OCT channels with two different bands centered at 840 nm and 1050 nm, which were designed to image the retina and the anterior segments of the eye, respectively. By combing the two probe light ...
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    4. UTILIZATION OF FUNDUS AUTOFLUORESCENCE, SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY, AND ENHANCED DEPTH IMAGING IN THE CHARACTERIZATION OF BIETTI CRYSTALLINE DYSTROPHY IN DIFFERENT STAGES

      UTILIZATION OF FUNDUS AUTOFLUORESCENCE, SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY, AND ENHANCED DEPTH IMAGING IN THE CHARACTERIZATION OF BIETTI CRYSTALLINE DYSTROPHY IN DIFFERENT STAGES
      Purpose: To characterize Bietti crystalline dystrophy (BCD) in different stages using multiple imaging modalities. Methods: Sixteen participants clinically diagnosed as BCD were included in the retrospective study and were categorized into 3 stages according to fundus photography. Eleven patients were genetically confirmed. Fundus autofluorescence, spectral domain optical coherence tomography, and enhanced depth imaging features of BCD were analyzed. Results: On fundus autofluorescence, the abnormal autofluorescence was shown to enlarge in ...
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    5. PEGylated Aucore–Agshell Nanorods as Optical Coherence Tomography Signal Nanoamplifiers

      PEGylated Aucore–Agshell Nanorods as Optical Coherence Tomography Signal Nanoamplifiers
      Optimizing contrast enhancement in optical coherence tomography (OCT) is essential for producing specific image signals and realizing its potential use in various biomedical imaging fields besides ophthalmology and cardiology. Using nanoparticles as selective signal nanoamplifiers will be helpful to highlight the lesion sites and identify cancerous changes that are difficult to diagnose currently. In this study, a quantitatively detailed analysis on the improvement of contrast enhancement and penetration depth of ...
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    6. Feature Of The Week 9/26/10: Researchers from University of Maryland Demonstrated Multimodality Optical Coherence Tomography and Fluorescence Laminar Optical Tomography Imaging

      Feature Of The Week 9/26/10: Researchers from University of Maryland Demonstrated Multimodality Optical Coherence Tomography and Fluorescence Laminar Optical Tomography Imaging
      Feature Of The Week 9/26/10: Multimodal imaging represents one of the current trends in the development of biophotonics imaging technologies for the integration of molecular and physiological information with structural information, enabling in vivo visualization and quantification of disease biomarkers and their progression over time. Multimodal imaging therefore improves the understanding of disease development, enables early diagnosis, and ultimately enhances treatment efficacy. This work presents an integration of ...
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    7. Integrated Optical Coherence Tomography (OCT) and Fluorescence Laminar Optical Tomography (FLOT)

      Integrated Optical Coherence Tomography (OCT) and Fluorescence Laminar Optical Tomography (FLOT)
      Multimodal imaging represents one of the current trends in the development of biophotonics imaging technologies. This paper briefly reviews current multimodal biophotonics imaging platforms in macroscopic, microscopic, and mesoscopic (or millimeter) scales. We also present a combined optical coherence tomography and line-scan fluorescence laminar optical tomography system for co-registered structural and molecular imaging with millimeter-scale imaging depth. Experimental results using a capillary phantom filled with the fluorescence dye Cy5.5 ...
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    8. Optical Coherence Tomography of Human Kidney

      Optical Coherence Tomography of Human Kidney
      Purpose To determine histopathological status of living human kidneys in real time and a noninvasive fashion would be a significant advancement in renal disease diagnosis. Recently we reported that optical coherence tomography has the requisite high spatial resolution to noninvasively determine histopathological changes in rodent kidneys with μm scale resolution. We established whether optical coherence tomography could 1) effectively penetrate the connective tissue capsule surrounding human kidneys, 2) provide a ...
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    9. Feature Of The Week 9/6/09: Automated Quantification of Microstructural Dimensions of the Human Kidney using Optical Coherence Tomography

      Feature Of The Week 9/6/09: Automated Quantification of Microstructural Dimensions of the Human Kidney using Optical Coherence Tomography
      ...mage analysis methods for quantification of spatially-resolved information for clinical applications. Recenty Qian Li and other researchers from the University of Maryland, Georgetown University, and Thorlabs demonstrate...
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    10. 1-13 of 13
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  2. About Qian Li

    Qian Li

    Qian (Grace) Li received a B.S. degree in electrical engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 2004, and a M.S. degree in biomedical engineering from Peking University, Beijing, in 2007, and a second M.S. degree in bioengineering from the University of Maryland, College Park, in 2009. She is currently a Research Assistant in the Biophotonics Imaging Laboratory, Fischell Department of Bioengineering, University of Maryland. Her current research interests include biophotonics imaging technologies, including optical coherence tomography, fluorescence imaging, etc., and their applications in biomedicine.