1. Articles mentioning both University of Southern California and University of Miami

    1-24 of 34 1 2 »
    1. Frequency of abnormal retinal nerve fibre layer and ganglion cell layer SDOCT scans in healthy eyes and glaucoma suspects in a prospective longitudinal study

      Frequency of abnormal retinal nerve fibre layer and ganglion cell layer SDOCT scans in healthy eyes and glaucoma suspects in a prospective longitudinal study
      ...University of Southern California, Los Angeles, California, USA 1. Correspondence to Dr David S Greenfield, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, 7101 Fairway Drive, Palm Beach Gar...
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    2. Effect of Contact Lens on Optical Coherence Tomography Imaging of Rodent Retina

      Effect of Contact Lens on Optical Coherence Tomography Imaging of Rodent Retina

      Visibility of optical coherence tomography (OCT) images can be severely degraded by speckle noise. A computationally efficient despeckling approach that strongly reduces the speckle noise is reported. It is based on discrete wavelet transform (DWT), but eliminates the conventional process of threshold estimation. By decomposing an image into different levels, a set of sub-band images are generated, where speckle noise is additive. These sub-band images can be compounded to suppress the additive speckle noise, as DWT coefficients resulting from speckle noise tend to be approximately decorrelated. The final despeckled image is reconstructed by taking the inverse wavelet transform of the ...

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    3. University of Miami Receives NIH Grant for Advanced Imaging for Glaucoma Study Optic Disc Reading Center

      University of Miami Receives NIH Grant for Advanced Imaging for Glaucoma Study Optic Disc Reading Center
      ...edict the development of glaucomatous visual field defects. The University of Miami Miller School of Medicine/Bascom Palmer Eye Institute (BPEI), University of Pittsburgh Medical Center (UPMC), and the University of Sout...
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    4. Comparison of Dresen Area Detected by Spectral Domain Optical Coherence Tomography and Color Fundus Imaging

      Comparison of Dresen Area Detected by Spectral Domain Optical Coherence Tomography and Color Fundus Imaging

      Purpose: To compare the measurements of drusen area from manual segmentation of color fundus photographs with those generated by an automated algorithm designed to detect elevations of the retinal pigment epithelium (RPE) on spectral domain optical coherence tomography (SDOCT) images. Methods: Fifty eyes with drusen secondary to non-exudative age-related macular degeneration (AMD) were enrolled. All eyes were imaged with the Cirrus HD-OCT instrument (Carl Zeiss Meditec, Dublin, CA) using a 200x200 A-scan raster pattern covering a 6mm X 6mm area centered on the fovea. Digital color fundus images were taken on the same day. Drusen were traced manually on the ...

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    5. Visible light optical coherence tomography for in vivo imaging the spectral contrasts of the retinal nerve fiber layer

      Visible light optical coherence tomography for in vivo imaging the spectral contrasts of the retinal nerve fiber layer

      The ultimate goal of the study is to provide an imaging tool to detect the earliest signs of glaucoma before clinically visible damage occurs to the retinal nerve fiber layer (RNFL). Studies have shown that the optical reflectance of the damaged RNFL at short wavelength ( reduced much more than that at long wavelength, which provides spectral contrasts for imaging the earliest damage to the RNFL. To image the spectral contrasts we built a dual-band spectral-domain optical coherence tomography (SD-OCT) with centered wavelength of 415nm (VIS) and 808nm (NIR), respectively. The light at the two bands was provided by the fundamental ...

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    6. Dual-band spectral-domain optical coherence tomography for in vivo imaging the spectral contrasts of the retinal nerve fiber layer

      Dual-band spectral-domain optical coherence tomography for in vivo imaging the spectral contrasts of the retinal nerve fiber layer

      The ultimate goal of the study is to provide an imaging tool to detect the earliest signs of glaucoma before clinically visible damage occurs to the retinal nerve fiber layer (RNFL). Studies have shown that the optical reflectance of the damaged RNFL at short wavelength (<560nm) is reduced much more than that at long wavelength, which provides spectral contrast for imaging the earliest damage to the RNFL. To image the spectral contrast we built a dual-band spectral-domain optical coherence tomography (SD-OCT) centered at 808nm (NIR) and 415nm (VIS). The light at the two bands was provided by the fundamental and frequency-doubled outputs of a broadband Ti:Sapphire laser. The depth resolution of the NIR and VIS OCT systems are 4.7µm and 12.2µm in the air, respectively. The system was applied to imaging the rat retina in vivo. Significantly different appearances between the OCT cross sectional images at the two bands were observed. The ratio of the light reflected from the RNFL over that reflected from the entire retina at the two bands were quantitatively compared. The experimental results showed that the dual-band OCT system is feasible for imaging the spectral contrasts of the RNFL.

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    7. Advanced Imaging for Glaucoma Study

      Advanced Imaging for Glaucoma Study
      The specific amis of the study are: •Develop image processing and diagnostic analysis for 3-dimensional Optical Coherence Tomography (OCT) data. •Develop ultrafast OCT systems for imaging of the macula and optic nerve head •Develop Doppler OCT to measure retinal perfusion •Evaluate OCT technologies in a longitudinal clinical trial
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    8. Retinal Layer Thickness Changes in Eyes With Preserved VisualAcuity and Diffuse Diabetic Macular Edema on Optical CoherenceTomography

      Retinal Layer Thickness Changes in Eyes With Preserved VisualAcuity and Diffuse Diabetic Macular Edema on Optical CoherenceTomography
      ...pest, Hungary; Keck School of Medicine (CAP), University of Southern California, Los Angeles, California; and Bascom Palmer Eye Institute (DCD), University of Miami Miller School of Medicine, Miami, Florida. Originally s...
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    9. Improving image segmentation performance and quantitative analysis via a computer-aided grading methodology for optical coherence tomography retinal image analysis

      Improving image segmentation performance and quantitative analysis via a computer-aided grading methodology for optical coherence tomography retinal image analysis
      ...i:10.1117/1.3470116 Published 9 August 2010 ABSTRACT REFERENCES (33) Delia Cabrera Debuc University of Miami, Miller School of Medicine, Bascom Palmer Eye Institute, 1638 NorthWest 10th Avenue, Miami, Florida 33136 Harry...
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    10. Feature Of The Week 7/18/10: Ultra-High Resolution Imaging of Retinal Structure of Birds of Prey using Optical Coherence Tomography

      Feature Of The Week 7/18/10: Ultra-High Resolution Imaging of Retinal Structure of Birds of Prey using Optical Coherence Tomography
      ...tina of birds of prey was done at Dr. Shuliang Jiao’s lab at Bascom Palmer Eye Institute, University of Miami Miller School of Medicine. Dr. Shuliang Jiao moved to University of Southern California in 2008. He joined the...
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    11. Topographic Differences in the Age-related Changes in the Retinal Nerve Fiber Layer of Normal Eyes Measured by Stratus Optical Coherence Tomography

      Topographic Differences in the Age-related Changes in the Retinal Nerve Fiber Layer of Normal Eyes Measured by Stratus Optical Coherence Tomography
      Purpose: To determine whether there are regional differences in the age-related changes in peripapillary retinal nerve fiber layer (RNFL) thickness as measured by time-domain optical coherence tomography (OCT). Methods: Fast peripapillary RNFL scans obtained with the Stratus time-domain OCT with nominal diameter of 3.46-mm centered on the optic disc were carried out on 425 normal participants over a wide age range. One eye was randomly selected for scanning or analysis. Average RNFL-, clock hour-, and quadrant-specific rates of RNFL thickness change were calculated and compared. Results: The 425 study participants ranged in age from 18 to 85 years with ...
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    12. Surgical Management of Vitreofoveal Traction Syndrome: Optical Coherence Tomographic Evaluation and Clinical Outcomes

      ...lmic Surg Lasers Imaging 2010;41:150-156.] From the Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida. Accepted for publication May 22, 2009. Supporte...
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    13. Reliability and reproducibility of macular segmentation using a custom-built optical coherence tomography retinal image analysis software

      ...artment of Ophthalmology, Szentkirályi u 48, Budapest 1085 Hungary Sudarshan Ranganathan University of Miami, Miller School of Medicine, Bascom Palmer Eye Institute, 1638 North West 10th Avenue, Miami, Florida 33136 Erik...
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    14. Experts Listed at Trusted LASIK Surgeons Bring Peers Up to Date on Vision Correction and Cataract Surgery at Annual AAO Meeting

      Experts Listed at Trusted LASIK Surgeons Bring Peers Up to Date on Vision Correction and Cataract Surgery at Annual AAO Meeting
      ...ASIK and Cataract Surgeon David Huang, M.D., PhD Dr. David Huang, Associate Professor of Ophthalmology at the Keck School of Medicine of USC and Director of the Doheny Laser Vision Center, performs LASIK and cataract sur...
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    15. Spectral Domain Optical Coherence Tomography Characteristics of Cuticular Drusen

      Purpose: To evaluate the appearance of cuticular drusen with spectral domain optical coherence tomography. Methods: Eyes of patients with cuticular drusen were imaged using a prototype spectral domain optical coherence tomography instrument with 5-μm axial resolution. Thickness maps were obtained after automated segmentation of the internal limiting membrane and retinal pigment epithelium layers using a proprietary algorithm. The volume of subretinal fluid (SRF) was calculated using a manual segmentation technique that involved drawing boundaries around the SRF. The repeatability of these measurements was tested by comparing the volume measurements from multiple scans performed on the same day in four eyes ...
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    16. Dual channel dual focus optical coherence tomography for imaging accommodation of the eye

      Dual channel dual focus optical coherence tomography for imaging accommodation of the eye

      A dual channel dual focus spectral-domain optical coherence tomography was developed for imaging the accommodation of the eye in real time. The system can provide simultaneous cross-sectional imaging of all the surfaces of the anterior segment of the eye including the cornea, anterior chamber, anterior and posterior surfaces of the crystalline lens. Thus, the modification of the curvatures of the anterior and posterior surfaces of the crystalline lens and the dimensions of the anterior segment ofthe eye with accommodation can be calculated. The system was successfully tested in imaging accommodation. The preliminary resultsdemonstrated the feasibility of this novel approach.

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    17. Retinal tumor imaging and volume quantification in mouse model using spectral-domain optical coherence tomography

      Retinal tumor imaging and volume quantification in mouse model using spectral-domain optical coherence tomography

      We have successfully imaged the retinal tumor in a mouse model using an ultra-high resolution spectral-domain optical coherence tomography (SD-OCT) designed for small animal retinal imaging. For segmentation of the tumor boundaries and calculation of the tumor volume, we developed a novel segmentation algorithm. The algorithm is based on parametric deformable models (active contours) and is driven by machine learning-based region classification, namely a Conditional Random Field. With this algorithm we are able to obtain the tumor boundaries automatically, while the user can specify additional constraints (points on the boundary) to correct the segmentation result, if needed. The system and ...

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    18. 1-24 of 34 1 2 »
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  2. Organizations in the News

    1. (6 articles) University of Pittsburgh
    2. (5 articles) Center for Ophthalmic Optics and Lasers
    3. (5 articles) Oregon Health & Science University
    4. (3 articles) Shanghai Jiao Tong University
    5. (3 articles) Massachusetts Institute of Technology
    6. (2 articles) National Eye Institute
    7. (2 articles) National Institutes of Health
    8. (2 articles) Semmelweis University
    9. (1 articles) Harvard University
    10. (1 articles) Mount Sinai School of Medicine
    11. (1 articles) Tufts University
    12. (1 articles) University of Wisconsin
  3. People in the News

    1. (22 articles) Carmen A. Puliafito
    2. (12 articles) Giovanni Gregori
    3. (11 articles) Shuliang Jiao
    4. (9 articles) Robert W. Knighton
    5. (8 articles) Philip J. Rosenfeld
    6. (6 articles) David Huang
    7. (5 articles) Marco B. Ruggeri
    8. (5 articles) William J. Feuer
    9. (5 articles) Brandon J. Lujan
    10. (4 articles) Joel S. Schuman
    11. (4 articles) Rohit Varma
    12. (3 articles) Timothy G. Murray
  4. OCT Companies in the News

    1. (11 articles) Carl Zeiss Meditec
    2. (1 articles) NinePoint Medical
  5. OCT Products in the News

    1. (4 articles) Zeiss Stratus OCT
    2. (2 articles) Zeiss Cirrus HD-OCT