1. University of Colorado

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    1. Mentioned In 25 Articles

    2. Quantitative assessment of skin swelling using optical coherence tomography

      Quantitative assessment of skin swelling using optical coherence tomography
      Background Preclinical and clinical studies suggest that optical coherence tomography (OCT) is a useful tool to visualize inflammatory conditions. Objective The objective of this study was to evaluate the usefulness of combining OCT and various image processing techniques for quantitative assessment of histamine-induced tissue swelling. Methods Both time-domain and frequency-domain OCT were used on a mouse ear model. The ear thickness and volume before and after histamine challenge were determined ...
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    3. Optical Coherence Tomography Angiography of a Pale Optic Disc in Demyelinating Optic Neuritis and Ischemic Optic Neuropathy

      Optical Coherence Tomography Angiography of a Pale Optic Disc in Demyelinating Optic Neuritis and Ischemic Optic Neuropathy
      Background: In the setting of a pale optic disc, distinguishing a previous episode of optic neuritis (ON) from that of nonarteritic anterior ischemic optic neuropathy (NAION) may be difficult on clinical examination. Differences in peripapillary vascular network structures, if present, might be of diagnostic utility. Methods: Thirty-five eyes with demyelinating ON, 33 eyes with NAION, and 81 eyes of normal subjects were imaged with optical coherence tomography angiography (OCT-A) to ...
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    4. Optical Coherence Tomography Angiography in Papilledema Compared With Pseudopapilledema

      Optical Coherence Tomography Angiography in Papilledema Compared With Pseudopapilledema
      Purpose : The purpose of this study is to evaluate differences in optical coherence tomography angiography (OCT-A) findings between patients with papilledema and pseudopapilledema. Methods : In this prospective, comparative study, 41 eyes of 21 subjects with papilledema, 27 eyes of 15 subjects with pseudopapilledema, and 44 eyes of 44 healthy normal subjects were included and were imaged using OCT-A. In addition to peripapillary total vasculature maps obtained with commercial vessel density ...
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    5. Repeatability and comparability of peripapillary vessel density measurements of high-density and non-high-density optical coherence tomography angiography scans in normal and glaucoma eyes

      Repeatability and comparability of peripapillary vessel density measurements of high-density and non-high-density optical coherence tomography angiography scans in normal and glaucoma eyes
      Aims To compare the peripapillary vessel density (VD) measurements of high-density (HD) and non-HD optical coherence tomography angiography (OCTA) scans in normal and glaucoma eyes, and to evaluate the intrasession repeatability of VD measurements of HD scans. Methods In a cross-sectional study, 46 normal (33 subjects) and 89 glaucoma (64 patients) eyes underwent 3 HD and 1 non-HD optic nerve head OCTA scans in the same session. Agreement in VD ...
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    6. Optical coherence tomography and T cell gene expression analysis in patients with benign multiple sclerosis

      Optical coherence tomography and T cell gene expression analysis in patients with benign multiple sclerosis
      Benign multiple sclerosis is a retrospective diagnosis based primarily on a lack of motor symptom progression. Recent findings that suggest patients with benign multiple sclerosis experience non-motor symptoms highlight the need for a more prospective means to diagnose benign multiple sclerosis early in order to help direct patient care. In this study, we present optical coherence tomography and T cell neurotrophin gene analysis findings in a small number of patients ...
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    7. Persistent Asymmetric Optic Disc Swelling After Long-Duration Space Flight: Implications for Pathogenesis

      Persistent Asymmetric Optic Disc Swelling After Long-Duration Space Flight: Implications for Pathogenesis
      Background: Several ophthalmic findings including optic disc swelling, globe flattening and choroidal folds have been observed in astronauts following long-duration space flight. The authors now report asymmetric choroidal expansion, disc swelling and optic disc morphologic changes in a 45-year-old astronaut which occurred during long-duration space flight and persisted following his space mission. Methods: Case study of ocular findings in an astronaut documented during and after a long-duration space flight of ...
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    8. Neuromyelitis optica and multiple sclerosis: Seeing differences through optical coherence tomography

      Neuromyelitis optica and multiple sclerosis: Seeing differences through optical coherence tomography
      ...ences through optical coherence tomography 1. JL Bennett 1. Departments of Neurology and Ophthalmology, University of Colorado, Denver, Colorado, USA 2. J de Seze 1. Neurology Service, University Hospital of St...
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    9. System and method for correcting sampling errors associated with radiation source tuning rate fluctuations in swept-wavelength interferometry

      System and method for correcting sampling errors associated with radiation source tuning rate fluctuations in swept-wavelength interferometry
      The frequency-sampling method is widely used to accommodate nonlinear electromagnetic source tuning in swept-wavelength interferometric techniques, such as optical frequency domain reflectometry (OFDR) and swept-wavelength optical coherence tomography (OCT). Two sources of sampling errors are associated with the frequency-sampling method. One source of error is the limit of an underlying approximation for long interferometer path mismatches and fast electromagnetic source tuning rates. A second source of error is transmission delays ...
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    10. Spectral Phase Analysis For Precision Ranging

      Spectral Phase Analysis For Precision Ranging
      Interferometric path length measurements using frequency-domain interferometry form the basis of several measurement techniques, including optical frequency domain reflectometry (OFDR), optical coherence tomography (OCT), and frequency-modulated continuous wave (FMCW) radar and lidar. A phase-sensitive and self-referenced approach to frequency-domain interferometry yields absolute and relative path length measurements with axial precision orders of magnitude better than the transform-limited axial resolution of the system
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    11. The American Glaucoma Society Workshop on "The Validity, Reliability, and Usability of Glaucoma Imaging Devices", October 5, 2012.

      The American Glaucoma Society Workshop on "The Validity, Reliability, and Usability of Glaucoma Imaging Devices", October 5, 2012.
      The American Glaucoma Society is co-sponsoring a Workshop with the FDA. The Workshop will focus on the Validity, Reliability and Usability of Glaucoma Imaging Devices. It will be held Friday, October 5, 2012 at the FDA White Oak Campus in Silver Spring, MD. For more informationclickHERE,and/or HERE,and/orvisit the AGS website www.americanglaucomasociety.net.
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    12. Phase-sensitive swept-source interferometry for absolute ranging with application to measurements of group refractive index and thickness

      Phase-sensitive swept-source interferometry for absolute ranging with application to measurements of group refractive index and thickness
      Interferometric range measurements using a wavelength-tunable source form the basis of several measurement techniques, including optical frequency domain reflectometry (OFDR), swept-source optical coherence tomography (SS-OCT), and frequency-modulated continuous wave (FMCW) lidar. We present a phase-sensitive and self-referenced approach to swept-source interferometry that yields absolute range measurements with axial precision three orders of magnitude better than the transform-limited axial resolution of the system. As an example application, we implement the proposed ...
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  2. About University of Colorado

    University of Colorado

    University of Colorado has been a leader in higher education and research in the Rocky Mountain region for 134 years. Founders laid the red-brick cornerstone of Old Main, the university's first building, in Boulder in 1876, the same year Colorado joined the union, and the nation marked its centennial. Since then, CU has evolved into a dynamic network of four campuses, including one of the newest biomedical and health care centers in the world. Today, the CU legacy for academic excellence, innovation and discovery continues at the University of Colorado at Boulder, the University of Colorado at Colorado Springs, the University of Colorado Denver and the University of Colorado Anschutz Medical Campus.