1. Yali Jia

    0 Comments Leave a Comment

    76-90 of 117 « 1 2 3 4 5 6 7 8 »
    1. Mentioned In 117 Articles

    2. Automated volumetric segmentation of retinal fluid on optical coherence tomography

      Automated volumetric segmentation of retinal fluid on optical coherence tomography
      We propose a novel automated volumetric segmentation method to detect and quantify retinal fluid on optical coherence tomography (OCT). The fuzzy level set method was introduced for identifying the boundaries of fluid filled regions on B-scans (x and y-axes) and C-scans (z-axis). The boundaries identified from three types of scans were combined to generate a comprehensive volumetric segmentation of retinal fluid. Then, artefactual fluid regions were removed using morphological characteristics ...
      Read Full Article
    3. Fourth international meeting on OCT Angiography, advances in OCT, and “en face” OCT will be held in Rome December 16 and 17 2016.

      Fourth international meeting on OCT Angiography, advances in OCT, and “en face” OCT will be held in Rome December 16 and 17 2016.
      ...his organization committee includes: Bruno Lumbroso, David Huang,Gabriel Coscas, Jay Duker, K. Bailey Freund, Yali Jia, Richard Rosen,Phil Rosenfeld, David Sarraf, Eric Souied, Richard Spaide, Giovanni Staurenghi, Nadia ...
      Read Full Article
    4. Automated Quantification of Capillary Nonperfusion Using Optical Coherence Tomography Angiography in Diabetic Retinopathy

      Automated Quantification of Capillary Nonperfusion Using Optical Coherence Tomography Angiography in Diabetic Retinopathy
      Importance Macular ischemia is a key feature of diabetic retinopathy (DR). Quantification of macular ischemia has potential as a biomarker for DR. Objective To assess the feasibility of automated quantification of capillary nonperfusion as a potential sign of macular ischemia using optical coherence tomography (OCT) angiography. Design, Setting, and Participants An observational study conducted in a tertiary, subspecialty, academic practice evaluated macular nonperfusion with 66-mm OCT angiography obtained with commercially ...
      Read Full Article
    5. Advanced image processing for optical coherence tomographic angiography of macular diseases

      Advanced image processing for optical coherence tomographic angiography of macular diseases
      This article provides an overview of advanced image processing for three dimensional (3D) optical coherence tomographic (OCT) angiography of macular diseases, including age-related macular degeneration (AMD) and diabetic retinopathy (DR). A fast automated retinal layers segmentation algorithm using directional graph search was introduced to separates 3D flow data into different layers in the presence of pathologies. Intelligent manual correction methods are also systematically addressed which can be done rapidly on ...
      Read Full Article
    6. DETECTION OF NONEXUDATIVE CHOROIDAL NEOVASCULARIZATION IN AGE-RELATED MACULAR DEGENERATION WITH OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      DETECTION OF NONEXUDATIVE CHOROIDAL NEOVASCULARIZATION IN AGE-RELATED MACULAR DEGENERATION WITH OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
      Purpose: To evaluate eyes with age-related macular degeneration and high-risk characteristics for choroidal neovascularization (CNV) with optical coherence tomographic (OCT) angiography to determine whether earlier detection of CNV is possible. Methods: Eyes with drusen, pigmentary changes, and with CNV in the fellow eye were scanned with a 70-kHz spectral domain OCT system (Optovue RTVue-XR Avanti). The split-spectrum amplitude-decorrelation angiography (SSADA) algorithm was used to distinguish blood flow from static tissue ...
      Read Full Article
    7. OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF TIME COURSE OF CHOROIDAL NEOVASCULARIZATION IN RESPONSE TO ANTI-ANGIOGENIC TREATMENT

      OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF TIME COURSE OF CHOROIDAL NEOVASCULARIZATION IN RESPONSE TO ANTI-ANGIOGENIC TREATMENT
      Purpose: To use optical coherence tomography (OCT) angiography to monitor the short-term blood flow changes in choroidal neovascularization (CNV) in response to treatment. Methods: In this retrospective report, a case of exudative CNV was followed closely with OCT angiography over three cycles of antiangiogenic treatment. Outer retinal flow index, CNV flow area and central macular retinal thickness were measured. Results: Quantitative measurements of CNV flow area and flow index showed ...
      Read Full Article
    8. Optimization of the split-spectrum amplitude-decorrelation angiography algorithm on a spectral optical coherence tomography system

      Optimization of the split-spectrum amplitude-decorrelation angiography algorithm on a spectral optical coherence tomography system
      The split-spectrum amplitude-decorrelation angiography algorithm was optimized on a spectral optical coherence tomography system using a flow phantom. The number of times the spectrum was split and the bandwidth of each split were adjusted to maximize the flow phantom decorrelation signal-to-noise ratio. The improvement in flow detection was then demonstrated with en face retinal angiograms. The optimized algorithm increased the detectable retinal microvascular flow and decreased the variability of the ...
      Read Full Article
    9. Post-doctoral fellowship in Optical Coherence Tomography at Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA

      Post-doctoral fellowship in Optical Coherence Tomography at Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
      ...rocessing and image processing are also desirable. Please visit www.COOLLab.net ; www.octangio.net or contact Yali Jia (jiaya@ohsu.edu)

      A postdoctoral research fellowship is immediately available in the Center for Oph...

      Read Full Article
    10. OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY FEATURES OF DIABETIC RETINOPATHY

      OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY FEATURES OF DIABETIC RETINOPATHY
      Purpose: To describe the optical coherence tomography angiography features of diabetic retinopathy. Methods: Using a 70 kHz optical coherence tomography and the split-spectrum amplitude decorrelation angiography algorithm, 6 mm x 6 mm 3-dimensional angiograms of the macula of 4 patients with diabetic retinopathy were obtained and compared with fluorescein angiography for features cataloged by the Early Treatment of Diabetic Retinopathy Study. Results: Optical coherence tomography angiography detected enlargement and distortion ...
      Read Full Article
    11. Automated choroidal neovascularization detection algorithm for optical coherence tomography angiography

      Automated choroidal neovascularization detection algorithm for optical coherence tomography angiography
      Optical coherence tomography angiography has recently been used to visualize choroidal neovascularization (CNV) in participants with age-related macular degeneration. Identification and quantification of CNV area is important clinically for disease assessment. An automated algorithm for CNV area detection is presented in this article. It relies on denoising and a saliency detection model to overcome issues such as projection artifacts and the heterogeneity of CNV. Qualitative and quantitative evaluations were performed ...
      Read Full Article
    12. En face Doppler total retinal blood flow measurement with 70 kHz spectral optical coherence tomography

      En face Doppler total retinal blood flow measurement with 70 kHz spectral optical coherence tomography
      An automated algorithm was developed for total retinal blood flow (TRBF) using 70-kHz spectral optical coherence tomography (OCT). The OCT was calibrated for the transformation from Doppler shift to speed based on a flow phantom. The TRBF scan pattern contained five repeated volume scans ( 2 2 mm ) obtained in 3 s and centered on central retinal vessels in the optic disc. The TRBF was calculated using an en face Doppler ...
      Read Full Article
    13. Macular Perfusion in Healthy Chinese: An Optical Coherence Tomography Angiogram Study

      Macular Perfusion in Healthy Chinese: An Optical Coherence Tomography Angiogram Study
      Purpose. To investigate macular perfusion in healthy Chinese individuals and examine its dependence on age and sex. Methods. Healthy adult Chinese individuals were recruited. Macular perfusion was measured by spectral-domain optical coherence tomography (OCT) using the split-spectrum amplitude-decorrelation angiography (SSADA) algorithm. The parafoveal flow index and vessel area density as well as the area of the foveal capillary-free zone (CFZ) were quantified. Results. A total of 76 eyes in 45 ...
      Read Full Article
    14. 76-90 of 117 « 1 2 3 4 5 6 7 8 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks