1. Articles from Michael C. Oliveira

    1-4 of 4
    1. Localization of cortical tissue optical changes during seizure activity in vivo with optical coherence tomography

      Localization of cortical tissue optical changes during seizure activity in vivo with optical coherence tomography

      Optical coherence tomography (OCT) is a high resolution, minimally invasive imaging technique, which can produce depth-resolved cross-sectional images. In this study, OCT was used to detect changes in the optical properties of cortical tissue in vivo in mice during the induction of global (pentylenetetrazol) and focal (4-aminopyridine) seizures. Through the use of a confidence interval statistical method on depth-resolved volumes of attenuation coefficient, we demonstrated localization of regions exhibiting both significant positive and negative changes in attenuation coefficient, as well as differentiating between global and focal seizure propagation.

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    2. Feature Of The Week 10/28/12: UC Riverside Presents GPU Accelerated Real-Time Multi-Functional SD-OCT system at 1300nm

      Feature Of The Week 10/28/12: UC Riverside Presents GPU Accelerated Real-Time Multi-Functional SD-OCT system at 1300nm

      We present a GPU accelerated multi-functional spectral domain optical coherence tomography system at 1300nm. The system is capable of real-time processing and display of every intensity image, comprised of 512 pixels by 2048 A-lines acquired at 20 frames per second. The update rate for all four images with size of 512 pixels by 2048 A-lines simultaneously (intensity, phase retardation, flow and en face view) is approximately 10 frames per second. Additionally, we report for the first time the characterization of phase retardation and diattenuation by a sample comprised of a stacked set of polarizing film and wave plate. The calculated ...

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    3. GPU accelerated real-time multi-functional spectral-domain optical coherence tomography system at 1300nm

      GPU accelerated real-time multi-functional spectral-domain optical coherence tomography system at 1300nm

      We present a GPU accelerated multi-functional spectral domain optical coherence tomography system at 1300nm. The system is capable of real-time processing and display of every intensity image, comprised of 512 pixels by 2048 A-lines acquired at 20 frames per second. The update rate for all four images with size of 512 pixels by 2048 A-lines simultaneously (intensity, phase retardation, flow and en face view) is approximately 10 frames per second. Additionally, we report for the first time the characterization of phase retardation and diattenuation by a sample comprised of a stacked set of polarizing film and wave plate. The calculated ...

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    4. Extracting structural features of rat sciatic nerve using polarization-sensitive spectral domain optical coherence tomography

      Extracting structural features of rat sciatic nerve using polarization-sensitive spectral domain optical coherence tomography

      We present spectral domain polarization-sensitive optical coherence tomography (SD PS-OCT) imaging of peripheral nerves. Structural and polarization-sensitive OCT imaging of uninjured rat sciatic nerves was evaluated both qualitatively and quantitatively. OCT and its functional extension, PS-OCT, were used to image sciatic nerve structure with clear delineation of the nerve boundaries to muscle and adipose tissues. A long-known optical effect, bands of Fontana, was also observed. Postprocessing analysis of these images provided significant quantitative information, such as epineurium thickness, estimates of extinction coefficient and birefringence of nerve and muscle tissue, frequency of bands of Fontana at different stretch levels of nerve ...

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    1-4 of 4
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  2. Topics in the News

    1. (4 articles) UC Riverside
    2. (4 articles) B. Hyle Park
    3. (3 articles) M. Shahidul Islam
    4. (3 articles) Yan Wang
    5. (1 articles) VU University Amsterdam
    6. (1 articles) Massachusetts General Hospital
    7. (1 articles) Johannes F. de Boer
    8. (1 articles) University of Copenhagen
    9. (1 articles) Center for Ophthalmic Optics and Lasers
    10. (1 articles) FDA
    11. (1 articles) Oregon Health & Science University
    12. (1 articles) SUNY at Stony Brook
    13. (1 articles) University College London
    14. (1 articles) David Huang
    15. (1 articles) Axel Petzold
    16. (1 articles) Perimeter Medical Imaging
    17. (1 articles) Carl Zeiss Meditec
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    Extracting structural features of rat sciatic nerve using polarization-sensitive spectral domain optical coherence tomography GPU accelerated real-time multi-functional spectral-domain optical coherence tomography system at 1300nm Feature Of The Week 10/28/12: UC Riverside Presents GPU Accelerated Real-Time Multi-Functional SD-OCT system at 1300nm Localization of cortical tissue optical changes during seizure activity in vivo with optical coherence tomography EARLY SPECTRAL-DOMAIN OPTICAL COHERENCE TOMOGRAPHY BIOMARKERS TO CONFIRM FELLOW EYE CHANGES IN ASYMMETRIC TYPE-2 MACULAR TELANGIECTASIA Relative Postpartum Retinal Vasoconstriction Detected With Optical Coherence Tomography Angiography 1.1 μm waveband tunable laser using emission-wavelength-controlled InAs quantum dots for swept-source optical coherence tomography applications Retinal nerve fibre layer and peripapillary vascular density by optical coherence tomography angiography in schizophrenia Livelayer: A Semi-Automatic Software Program for Segmentation of Layers and Diabetic Macular Edema in Optical Coherence Tomography Images Long-term progression of myopic maculopathy in degenerative myopia as imaged by SD-OCT and IR imaging Postdoctoral Research Fellowship position  in the Center for Ophthalmic Optics and Lasers, Casey Eye Institute, Oregon Health & Science University Perimeter Medical Imaging AI Announces U.S. FDA 510(k) Clearance for OCT Imaging System