1. Duke University

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    1. Mentioned In 475 Articles

    2. Feature of the Week 06/23/2018: Real-time visualization and interaction with static and live optical coherence tomography volumes in immersive virtual reality

      Feature of the Week 06/23/2018: Real-time visualization and interaction with static and live optical coherence tomography volumes in immersive virtual reality
      Virtual reality (VR) head-mounted displays are an attractive technology for viewing intrasurgical optical coherence tomography (OCT) volumes because they liberate surgeons from microscope oculars. We demonstrate real-time, interactive viewing of OCT volumes in a commercial HTC Vive immersive VR system using previously reported ray casting techniques. Furthermore, we show interactive manipulation and sectioning of volumes using handheld controllers and guidance of mock surgical procedures in porcine eyes exclusively within VR ...
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    3. Real-time visualization and interaction with static and live optical coherence tomography volumes in immersive virtual reality

      Real-time visualization and interaction with static and live optical coherence tomography volumes in immersive virtual reality
      Virtual reality (VR) head-mounted displays are an attractive technology for viewing intrasurgical optical coherence tomography (OCT) volumes because they liberate surgeons from microscope oculars. We demonstrate real-time, interactive viewing of OCT volumes in a commercial HTC Vive immersive VR system using previously reported ray casting techniques. Furthermore, we show interactive manipulation and sectioning of volumes using handheld controllers and guidance of mock surgical procedures in porcine eyes exclusively within VR ...
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    4. Clinical Use of Optical Coherence Tomography Angiography in Diabetic Retinopathy Treatment Ready for Showtime?

      Clinical Use of Optical Coherence Tomography Angiography in Diabetic Retinopathy Treatment Ready for Showtime?
      Diabetic macular edema (DME) and proliferative diabetic retinopathy (PDR) are the 2 advanced stages of diabetic retinopathy (DR) that are the main causes for visual loss in patients with diabetes. Both DME and PDR can be readily diagnosed with clinical examination and, increasingly, by the noninvasive use of optical coherence tomography. However, another, less commonly recognized cause of visual loss in patients with diabetes is diabetic macular ischemia (DMI) in ...
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    5. Deep longitudinal transfer learning-based automatic segmentation of photoreceptor ellipsoid zone defects on optical coherence tomography images of macular telangiectasia type 2

      Deep longitudinal transfer learning-based automatic segmentation of photoreceptor ellipsoid zone defects on optical coherence tomography images of macular telangiectasia type 2
      Photoreceptor ellipsoid zone (EZ) defects visible on optical coherence tomography (OCT) are important imaging biomarkers for the onset and progression of macular diseases. As such, accurate quantification of EZ defects is paramount to monitor disease progression and treatment efficacy over time. We developed and trained a novel deep learning-based method called Deep OCT Atrophy Detection (DOCTAD) to automatically segment EZ defect areas by classifying 3-dimensional A-scan clusters as normal or ...
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    6. Volumetric Measurement of Subretinal Blebs Using Microscope-Integrated Optical Coherence Tomography

      Volumetric Measurement of Subretinal Blebs Using Microscope-Integrated Optical Coherence Tomography
      Purpose : We advance studies of subretinal treatments by developing a microscope-integrated optical coherence tomography (MIOCT) image-based method for measuring the volume of therapeutics delivered into the subretinal space. Methods : A MIOCT image-based volume measurement method was developed and assessed for accuracy and reproducibility by imaging an object of known size in model eyes. This method then was applied to subretinal blebs created by injection of diluted triamcinolone. Bleb volumes obtained ...
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    7. PERIVASCULAR THICKENING ON OPTICAL COHERENCE TOMOGRAPHY AS A MARKER OF INFLAMMATION IN BIRDSHOT RETINOCHOROIDITIS

      PERIVASCULAR THICKENING ON OPTICAL COHERENCE TOMOGRAPHY AS A MARKER OF INFLAMMATION IN BIRDSHOT RETINOCHOROIDITIS
      Purpose: In this study, we hypothesized that thickening along the major arcade vessels is a noninvasive marker of inflammation in eyes with birdshot retinochoroiditis (BRC). Methods: In this single-center retrospective study, patients with BRC were identified. Perivascular thickening was categorized as mild, moderate, or severe, based on a set of standard reference retinal thickness maps derived from representative spectral domain optical coherence tomography volume scans. The assigned perivascular severity thickness ...
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      Mentions: Duke University
    8. Rapid regression of retinal neovascularization following intravitreal bevacizumab in branch retinal vein occlusion imaged by optical coherence tomography angiography

      Rapid regression of retinal neovascularization following intravitreal bevacizumab in branch retinal vein occlusion imaged by optical coherence tomography angiography
      Retinal neovascularization developing secondary to ischemic branch retinal vein occlusion (BRVO) is conventionally treated with sector panretinal photocoagulation (PRP). Elevated levels of the vascular endothelial growth factor (VEGF) play an important role in the development of these new vessels [1] and thus administration of anti-VEGF agents has been reported to be of therapeutic use as well. [2] , [3] We present a case of BRVO in a 55-year-old female, previously treated ...
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      Mentions: Duke University
    9. Anterior chamber blood cell differentiation using spectroscopic optical coherence tomography

      Anterior chamber blood cell differentiation using spectroscopic optical coherence tomography
      There is great clinical importance in identifying cellular responses in the anterior chamber (AC) which can indicate signs of hyphema (an accumulation of red blood cells (RBCs)) or aberrant intraocular inflammation (an accumulation of white blood cells (WBCs)). These responses are difficult to diagnose and require specialized equipment such as ophthalmic microscopes and specialists trained in examining the eye. In this work, we applied spectroscopic OCT to differentiate between RBCs ...
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    10. IDENTIFICATION OF POSTERIOR SEGMENT PATHOLOGY WITH EN FACE RETINAL IMAGING USING MULTICOLOR CONFOCAL SCANNING LASER OPHTHALMOSCOPY

      IDENTIFICATION OF POSTERIOR SEGMENT PATHOLOGY WITH EN FACE RETINAL IMAGING USING MULTICOLOR CONFOCAL SCANNING LASER OPHTHALMOSCOPY
      Purpose: To assess posterior segment findings on multicolor confocal scanning laser ophthalmoscopy by correlation with spectral domain optical coherence tomography (SD-OCT) and to quantify agreement between these imaging modalities. Methods: Retrospective review of 159 eyes of 96 consecutive patients who underwent concurrent imaging with multicolor confocal scanning laser ophthalmoscopy and SD-OCT. Positive percent agreement and negative percent agreement were calculated for each finding identified on infrared, green, blue, and multicolor ...
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    11. Full depth measurement of tenofovir transport in rectal mucosa using confocal Raman spectroscopy and optical coherence tomography

      Full depth measurement of tenofovir transport in rectal mucosa using confocal Raman spectroscopy and optical coherence tomography
      The prophylactic activity of antiretroviral drugs applied as microbicides against sexually transmitted HIV is dependent upon their concentrations in infectable host cells. Within mucosal sites of infection (e.g., vaginal and rectal mucosa), those cells exist primarily in the stromal layer of the tissue. Traditional pharmacokinetic studies of these drugs have been challenged by poor temporal and spatial specificity. Newer techniques to measure drug concentrations, involving Raman spectroscopy, have been ...
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    12. Design and implementation of a low-cost, portable OCT system

      Design and implementation of a low-cost, portable OCT system
      Optical coherence tomography (OCT) is a widely used biomedical imaging tool, primarily in ophthalmology to diagnose and stage retinal diseases. In order to increase access for a wider range of applications and in low resource settings, we developed a portable, low-cost OCT system that has comparable imaging performance to commercially available systems. Here, we present the system design and characterization and compare the system performance to other commercially available OCT ...
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    13. CHORIOCAPILLARIS FLOW VOIDS IN CRYPTOCOCCAL CHOROIDITIS USING OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      CHORIOCAPILLARIS FLOW VOIDS IN CRYPTOCOCCAL CHOROIDITIS USING OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
      Purpose: To report an unusual case of cryptococcal choroiditis and highlight the multimodal imaging findings, particularly the choriocapillaris flow voids using optical coherence tomography angiography. Methods: Retrospective review of the clinical course of a single patient with cryptococcal choroiditis. Results: A 69-year-old man undergoing chemotherapy for T-cell prolymphocytic leukemia developed disseminated crytococcal neoformans infection. He developed bilateral cryptococcal choroiditis with multiple yellow-white choroidal lesion on fundoscopy in both eyes. Multimodal ...
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      Mentions: Duke University
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  2. About Duke University

    Duke University

    Duke University is a private research university located in Durham, North Carolina, USA. Duke University Medical CenterFor more than 75 years, our community of scholars and students has been devoted to understanding the causes, prevention and treatment of human disease. Duke University Eye Center is part of the Medical School.  Duke University's Pratt School of Engineering established The Fitzpatrick Center for Photonics and Communications Systems in December 2000 to help turn North Carolina into a "photon forest" where research and development in photonics would create the kind of technological advance and economic growth found in California's Silicon Valley.

  3. Quotes about Duke University

    1. We are excited to be working with an institution as prestigious as Duke University to advance medical diagnostics.
      In SpectraScience Announces Licensing of Key Technology From Duke University