1. Gadi Wollstein

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    1. Mentioned In 110 Articles

    3. Designing visible-light optical coherence tomography towards clinics

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      Designing visible-light optical coherence tomography towards clinics
      Background: The capabilities of visible-light optical coherence tomography (vis-OCT) in noninvasive anatomical and functional retinal imaging have been demonstrated by multiple groups in both rodents and healthy human subjects. Translating laboratory prototypes to an integrated clinical-environment-friendly system is required to explore the full potential of vis-OCT in disease management. Methods: We developed and optimized a portable vis-OCT system for human retinal imaging in clinical settings. We acquired raster- and circular-scan ...
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      Mentions: Joel S. Schuman Gadi Wollstein Hiroshi Ishikawa

    4. Retinal optical coherence tomography image enhancement via deep learning

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      Retinal optical coherence tomography image enhancement via deep learning
      Optical coherence tomography (OCT) images of the retina are a powerful tool for diagnosing and monitoring eye disease. However, they are plagued by speckle noise, which reduces image quality and reliability of assessment. This paper introduces a novel speckle reduction method inspired by the recent successes of deep learning in medical imaging. We present two versions of the network to reflect the needs and preferences of different end-users. Specifically, we ...
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      Mentions: Joel S. Schuman Gadi Wollstein Hiroshi Ishikawa

    5. Signal normalization among multiple optical coherence tomography devices

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      Signal normalization among multiple optical coherence tomography devices
      The present disclosure is directed to systems and methods for normalizing an image of an eye among multiple optical coherence tomography (OCT) devices. The system can receive an OCT image and generate a normalized OCT image. The system is configured to normalize a sample density of the received image, normalize an amount of noise using a suitable noise reduction technique, normalize a distribution of signal amplitudes of the image, and ...
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      Mentions: University of Pittsburgh Joel S. Schuman Gadi Wollstein

    6. The Future of Imaging in Detecting Glaucoma Progression

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      The Future of Imaging in Detecting Glaucoma Progression
      Ocular imaging has been heavily incorporated into glaucoma management and provides important information that aids in the detection of disease progression. Longitudinal studies have shown that the circumpapillary retinal nerve fiber layer is an important parameter for glaucoma progression detection, whereas other studies have demonstrated that macular parameters, such as the ganglion cell inner plexiform layer and optic nerve head parameters, also are useful for progression detection. The introduction of ...
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      Mentions: Joel S. Schuman Gadi Wollstein NYU Langone Medical Center

    8. Signal Normalization Reduces Image Appearance Disparity Among Multiple Optical Coherence Tomography Devices

      Explore TVST Journal Ophthalmology
      Signal Normalization Reduces Image Appearance Disparity Among Multiple Optical Coherence Tomography Devices
      Purpose : To assess the effect of the previously reported optical coherence tomography (OCT) signal normalization method on reducing the discrepancies in image appearance among spectral-domain OCT (SD-OCT) devices. Methods : Healthy eyes and eyes with various retinal pathologies were scanned at the macular region using similar volumetric scan patterns with at least two out of three SD-OCT devices at the same visit (Cirrus HD-OCT, Zeiss, Dublin, CA; RTVue, Optovue, Fremont, CA ...
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      Mentions: University of Pittsburgh Optovue Heidelberg Engineering

    9. Mapping in-vivo optic nerve head strains caused by intraocular and intracranial pressures

      Explore Conference Proceedings Neurology , Ophthalmology
      Mapping in-vivo optic nerve head strains caused by intraocular and intracranial pressures
      Although it is well documented that abnormal levels of either intraocular (IOP) or intracranial pressure (ICP) can lead to potentially blinding conditions, such as glaucoma and papilledema, little is known about how the pressures actually affect the eye. Even less is known about potential interplay between their effects, namely how the level of one pressure might alter the effects of the other. Our goal was to measure in-vivo the pressure-induced ...
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      Mentions: University of Pittsburgh Joel S. Schuman Gadi Wollstein

    11. Adaptive optics optical coherence tomography in glaucoma

      Explore ScienceDirect Ophthalmology
      Adaptive optics optical coherence tomography in glaucoma
      Since the introduction of commercial optical coherence tomography (OCT) systems, the ophthalmic imaging modality has rapidly expanded and it has since changed the paradigm of visualization of the retina and revolutionized the management and diagnosis of neuro-retinal diseases, including glaucoma. OCT remains a dynamic and evolving imaging modality, growing from time-domain OCT to the improved spectral-domain OCT, adapting novel image analysis and processing methods, and onto the newer swept-source OCT ...
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      Mentions: University of Pittsburgh Joel S. Schuman Gadi Wollstein

    12. Establishing compatibility between two- and three-dimensional optical coherence tomography scans

      Explore uspto.gov Ophthalmology , Patents
      Establishing compatibility between two- and three-dimensional optical coherence tomography scans
      Advances in optical coherence tomography (OCT) have prompted a transition from time domain OCT, providing 2D OCT images, to spectral domain OCT, which has a 3D imaging capability. Yet conventional technology offers little toward the goal of inter-device compatibility between extant 2D OCT images and newer 3D OCT images for the same or comparable subjects, as in the context of ongoing monitoring the quantitative status of a patient's eyes ...
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      Mentions: University of Pittsburgh Joel S. Schuman Gadi Wollstein

    14. Clinical Utility of Optical Coherence Tomography in Glaucoma

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      Clinical Utility of Optical Coherence Tomography in Glaucoma
      Optical coherence tomography (OCT) has established itself as the dominant imaging modality in the management of glaucoma and retinal diseases, providing high-resolution visualization of ocular microstructures and objective quantification of tissue thickness and change. This article reviews the history of OCT imaging with a specific focus on glaucoma. We examine the clinical utility of OCT with respect to diagnosis and progression monitoring, with additional emphasis on advances in OCT technology ...
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      Mentions: University of Pittsburgh Joel S. Schuman Gadi Wollstein

    15. Optic Nerve Head Measurements With Optical Coherence Tomography: A Phantom-Based Study Reveals Differences Among Clinical Devices

      Explore IOVS Journal Ophthalmology
      Optic Nerve Head Measurements With Optical Coherence Tomography: A Phantom-Based Study Reveals Differences Among Clinical Devices
      Purpose : Optical coherence tomography (OCT) can monitor for glaucoma by measuring dimensions of the optic nerve head (ONH) cup and disc. Multiple clinical studies have shown that different OCT devices yield different estimates of retinal dimensions. We developed phantoms mimicking ONH morphology as a new way to compare ONH measurements from different clinical OCT devices. Methods : Three phantoms were fabricated to model the ONH: One normal and two with glaucomatous ...
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      Mentions: University of Pittsburgh Joel S. Schuman Daniel X. Hammer

    16. Virtual Averaging Making Nonframe-Averaged Optical Coherence Tomography Images Comparable to Frame-Averaged Images

      Explore TVST Journal Ophthalmology
      Virtual Averaging Making Nonframe-Averaged Optical Coherence Tomography Images Comparable to Frame-Averaged Images
      Purpose : Developing a novel image enhancement method so that nonframe-averaged optical coherence tomography (OCT) images become comparable to active eye-tracking frame-averaged OCT images. Methods : Twenty-one eyes of 21 healthy volunteers were scanned with noneye-tracking nonframe-averaged OCT device and active eye-tracking frame-averaged OCT device. Virtual averaging was applied to nonframe-averaged images with voxel resampling and adding amplitude deviation with 15-time repetitions. Signal-to-noise (SNR), contrast-to-noise ratios (CNR), and the distance between the ...
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      Mentions: University of Pittsburgh Joel S. Schuman Larry Kagemann
    17. 1-15 of 110 1 2 3 4 5 6 7 8 »
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  4. About Gadi Wollstein

    Gadi Wollstein

    Gadi Wollstein is a Professor of Ophthalmology, Vice Chairman for Clinic Research and Director of the Ophthalmic Imaging Research Laboratory in NYU Langone Eye Center.

  5. Related Topics

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