1. Oregon Health & Science University

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    1. Mentioned In 454 Articles

    2. Absolute measurement of subnanometer scale vibration of cochlear partition of an excised guinea pig cochlea using spectral-domain phase-sensitive optical coherence tomography

      Absolute measurement of subnanometer scale vibration of cochlear partition of an excised guinea pig cochlea using spectral-domain phase-sensitive optical coherence tomography
      Direct measurement of absolute vibration parameters from different locations within the mammalian organ of Corti is crucial for understanding the hearing mechanics such as how sound propagates through the cochlea and how sound stimulates the vibration of various structures of the cochlea, namely, basilar membrane (BM), recticular lamina, outer hair cells and tectorial membrane (TM). In this study we demonstrate the feasibility a modified phase-sensitive spectral domain optical coherence tomography ...
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    3. Split-spectrum amplitude-decorrelation angiography with optical coherence tomography

      Split-spectrum amplitude-decorrelation angiography with optical coherence tomography
      Amplitude decorrelation measurement is sensitive to transverse flow and immune to phase noise in comparison to Doppler and other phase-based approaches. However, the high axial resolution of OCT makes it very sensitive to the pulsatile bulk motion noise in the axial direction. To overcome this limitation, we developed split-spectrum amplitude-decorrelation angiography (SSADA) to improve the signal-to-noise ratio (SNR) of flow detection. The full OCT spectrum was split into several narrower ...
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    4. Speckle reduction in swept source optical coherence tomography images with slow-axis averaging

      Speckle reduction in swept source optical coherence tomography images with slow-axis averaging
      The effectiveness of speckle reduction using traditional frame averaging technique was limited in ultrahigh speed optical coherence tomography (OCT). As the motion between repeated frames was very small, the speckle pattern of the frames might be identical. This problem could be solved by averaging frames acquired at slightly different locations. The optimized scan range depended on the spot size of the laser beam, the smoothness of the boundary, and the ...
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    5. Intraocular lens power calculation after myopic and hyperopic laser vision correction using optical coherence tomography

      Intraocular lens power calculation after myopic and hyperopic laser vision correction using optical coherence tomography
      Purpose To use optical coherence tomography (OCT) to measure corneal power and calculate intraocular lens (IOL) power in cataract surgeries after myopic and hyperopic laser vision correction (LVC). Methods Patients with previous LVC were enrolled in this prospective study at two centers (Doheny Eye Institute, Los Angeles, CA, USA and Cullen Eye Institute, Houston, TX, USA). Corneal power was measured with a Fourier-domain OCT system. The intravisit repeatability of OCT ...
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    6. Repeatability of Pachymetric Mapping Using Fourier Domain Optical Coherence Tomography in Corneas With Opacities

      Repeatability of Pachymetric Mapping Using Fourier Domain Optical Coherence Tomography in Corneas With Opacities
      Purpose: To evaluate the repeatability of Fourier domain optical coherence tomography (OCT) pachymetric mapping in patients with corneal opacities and to assess the reliability of Fourier domain OCT with 830 nm wavelength as a pachymetric measurement tool in opaque corneas. Methods: A Fourier domain OCT system was used to map the corneal thickness of patients with corneal scars or dystrophy. A retrospective study of a consecutive series was conducted. The ...
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    7. Measurements of Microkeratome Cuts in Donor Corneas With Ultrasound and Optical Coherence Tomography

      Measurements of Microkeratome Cuts in Donor Corneas With Ultrasound and Optical Coherence Tomography
      Purpose: To evaluate optical coherence tomography (OCT) in the measurement of donor corneas in preparation for endothelial keratoplasty. Methods: Donor corneas were imaged by OCT while immersed in preservation medium. Central corneal thickness (CCT) was measured by OCT from the Bowman layer to the endothelium. The corneas were then mounted on an artificial anterior chamber, and the epithelium was removed. Ultrasound pachymetry (USP) was used to measure CCT just before ...
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    8. Imaging Organ of Corti Vibration Using Fourier-Domain OCT

      Imaging Organ of Corti Vibration Using Fourier-Domain OCT
      Measuring the sound stimulated vibration from various structures in the organ of Corti is important in understanding how the small vibrations are amplified and detected. In this study we examine the feasibility of using phase-sensitive Fourier domain optical coherence tomography (PSFD-OCT) to measure vibration of the cellular structures of the organ of Corti. PSFD-OCT is a low coherence interferrometry system where the interferrogram is detected as a function of wavelength ...
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    9. Postdoctoral Positions in Biomedical Optics and Optical Coherence Tomography at the Center for Ophthalmic Optics & Lasers, Oregon Health & Science University

      Postdoctoral Positions in Biomedical Optics and Optical Coherence Tomography at the Center for Ophthalmic Optics & Lasers, Oregon Health & Science University
      ... biomedical optics at the Center for Ophthalmic Optics & Lasers (www.COOLLab.net) in the Casey Eye Institute, Oregon Health & Science University (OHSU). The COOL laboratory is a multidisciplinary team that incorporates o...
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    10. Assessment of strain and strain rate in embryonic chick heart in vivo using tissue Doppler optical coherence tomography

      Assessment of strain and strain rate in embryonic chick heart in vivo using tissue Doppler optical coherence tomography
      ...t of Bioengineering, University of Washington, Seattle, WA 98195, USA 2 Department of Biomedical Engineering, Oregon Health and Science University, Portland, OR 97239, USA 3 Author to whom any correspondence should be ad...
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    11. Oregon Health & Science University, Casey Eye Institute Receives $4 Million NIH Grant for Imaging-Guided Eye Surgery

      Oregon Health & Science University, Casey Eye Institute Receives $4 Million NIH Grant for Imaging-Guided Eye Surgery
      ...Oregon Health & Science University Press Release -In August 2011 Oregon Health & Science University, Casey Eye Institute received a 3.9 million dollar NIH grant entitled “Guiding the treatment of anterior eye d...
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    12. Between-Grader Repeatability of Tear Meniscus Measurements Using Fourier-Domain OCT in Patients With Dry Eye

      Between-Grader Repeatability of Tear Meniscus Measurements Using Fourier-Domain OCT in Patients With Dry Eye
      BACKGROUND AND OBJECTIVE: To examine the between-grader repeatability of height, depth, and cross-sectional area measurements of the lower tear meniscus, using a Fourier-domain optical coherence tomography (OCT) system. PATIENTS AND METHODS: A total of 16 patients with dry eye had the lower tear meniscus of the right eye imaged twice in rapid succession. The tear meniscus height, depth, and cross-sectional area were measured by two masked graders using computer calipers ...
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    13. 346-360 of 454 « 1 2 ... 21 22 23 24 25 26 27 ... 29 30 31 »
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  2. About Oregon Health & Science University

    Oregon Health & Science University

    Oregon Health & Science University (OHSU) is a public university in Oregon with a main campus, including three hospitals, in Portland and a smaller campus in Hillsboro. It was formed in 1974 as the University of Oregon Health Sciences Center, combining state dentistry, medicine, and nursing programs into a single center. It was renamed Oregon Health Sciences University in 1981 and took its current name in 2001, as part of a merger with the Oregon Graduate Institute of Science and Technology (OGI) in Hillsboro. In addition, the university has several partnership programs including a joint PharmD Pharmacy program with Oregon State University.